Urbit Developers
  • Hoon

    • Overview
    • Cheat Sheet
    • Irregular forms
    • Hoon Errors
    • Hoon Style Guide
    • Basic Types
    • Advanced Types
    • Auras
    • Arvo
    • Standard Library

      • 1a: Basic Arithmetic
      • 1b: Tree Addressing
      • 1c: Molds and Mold-Builders
      • 2a: Unit Logic
      • 2b: List Logic
      • 2c: Bit Arithmetic
      • 2d: Bit Logic
      • 2e: Insecure Hashing
      • 2f: Noun Ordering
      • 2g: Unsigned Powers
      • 2h: Set Logic
      • 2i: Map Logic
      • 2j: Jar and Jug Logic
      • 2k: Queue Logic
      • 2l: Container from Container
      • 2m: Container from Noun
      • 2n: Functional Hacks
      • 2o: Normalizing Containers
      • 2p: Serialization
      • 2q: Molds and Mold-Builders
      • 3a: Modular and Signed Ints
      • 3b: Floating Point
      • 3c: Urbit Time
      • 3d: SHA Hash Family
      • 3e: AES encryption (Removed)
      • 3f: Scrambling
      • 3g: Molds and Mold-Builders
      • 4a: Exotic Bases
      • 4b: Text Processing
      • 4c: Tank Printer
      • 4d: Parsing (Tracing)
      • 4e: Parsing (Combinators)
      • 4f: Parsing (Rule-Builders)
      • 4g: Parsing (Outside Caller)
      • 4h: Parsing (ASCII Glyphs)
      • 4i: Parsing (Useful Idioms)
      • 4j: Parsing (Bases and Base Digits)
      • 4k: Atom Printing
      • 4l: Atom Parsing
      • 4m: Formatting Functions
      • 4n: Virtualization
      • 4o: Molds
      • 5a: Compiler Utilities
      • 5b: Macro Expansion
      • 5c: Compiler Backend & Prettyprinter
      • 5d: Parser
      • 5e: Molds and mold builders
      • 5f: Profiling support
      • Runes

        • Constants (Atoms and Strings)
        • + lus · Arms
        • | bar · Cores
        • $ buc · Structures
        • % cen · Calls
        • : col · Cells
        • . dot · Nock
        • / fas · Imports
        • ^ ket · Casts
        • ; mic · Make
        • ~ sig · Hints
        • = tis · Subject
        • ? wut · Conditionals
        • ! zap · Wild
        • --, == Terminators
        • Limbs and wings

          • Limbs
          • Wings
          • Zuse

            • 2d(1-5): To JSON, Wains
            • 2d(6): From JSON
            • 2d(7): From JSON (unit)
            • 2e(2-3): Print & Parse JSON
            • 2m: Ordered Maps
          • Arvo

            • Overview
            • Ames

              • Overview
              • Cryptography
              • API Reference
              • Scry Reference
              • Data Types
              • Behn

                • Overview
                • API Reference
                • Scry Reference
                • Examples
                • Clay

                  • Overview
                  • Architecture
                  • Using Clay
                  • Data Types
                  • Scry Reference
                  • API Reference
                  • Examples
                  • Marks

                    • Overview
                    • Writing Marks
                    • Using Marks
                    • Examples
                  • Dill

                    • Overview
                    • API Reference
                    • Scry Reference
                    • Data Types
                    • Eyre

                      • Overview
                      • External API Reference
                      • Internal API Reference
                      • Scry Reference
                      • Data Types
                      • Guide
                      • Gall

                        • Overview
                        • API Reference
                        • Scry Reference
                        • Data Types
                        • Threads Reference
                        • Iris

                          • Overview
                          • API Reference
                          • Data Types
                          • Example
                          • Jael

                            • Overview
                            • API Reference
                            • Scry Reference
                            • Data Types
                            • Examples
                            • Khan

                              • Overview
                              • API Reference
                              • Data Types
                              • Example
                              • Threads

                                • Overview
                                • HTTP API
                                • Reference
                                • Gall

                                  • Start Thread
                                  • Take Result
                                  • Take Facts
                                  • Stop Thread
                                  • Poke Thread
                                  • Examples

                                    • Fetch JSON
                                    • Child Thread
                                    • Main-loop
                                    • Poke Agent
                                    • Scry
                                    • Take Fact
                                  • Concepts

                                    • Scries
                                    • Subscriptions
                                    • Tutorials

                                      • Move Trace
                                      • Reference

                                        • Cryptography
                                        • Filesystem Hierarchy
                                      • Nock

                                        • Nock Definition
                                        • Explanation
                                        • Example
                                        • Implementations
                                        • Vere

                                          • C Runtime System
                                          • Land of Nouns
                                          • API overview by prefix
                                          • C in Urbit
                                          • Writing Jets
                                          • Cryptography
                                          • Azimuth

                                            • Overview
                                            • Urbit HD Wallet
                                            • Azimuth Data Flow
                                            • Azimuth.eth
                                            • Ecliptic.eth
                                            • Advanced Azimuth Tools
                                            • Life and Rift
                                            • Layer 2

                                              • Layer 2 Overview
                                              • Layer 2 Actions
                                              • Transaction Format
                                              • Rollers
                                              • Roller HTTP RPC-API
                                              • Custom Roller Tutorial
                                            • Glossary

                                              • Agent
                                              • Ames
                                              • API
                                              • Aqua
                                              • Arm
                                              • Arvo
                                              • Atom
                                              • Aura
                                              • Aural ASCII
                                              • Azimuth
                                              • Battery
                                              • Behn
                                              • Bowl
                                              • Bridge
                                              • Bunt
                                              • Card
                                              • Case
                                              • Cask
                                              • Cell
                                              • Censures
                                              • Claims
                                              • Clay
                                              • Cold atom
                                              • Comet
                                              • Commit
                                              • Cons
                                              • Context
                                              • Cord
                                              • Core
                                              • Delegated Sending
                                              • Desk
                                              • Dill
                                              • Document Proposal
                                              • Dojo
                                              • Door
                                              • Double-boot
                                              • Dry Gate
                                              • Duct
                                              • Ecliptic
                                              • Entropy
                                              • Event Log
                                              • Eyre
                                              • Face
                                              • Fact
                                              • Foo Bar Baz
                                              • Galaxy
                                              • Gall
                                              • Garden
                                              • Gate
                                              • Generator
                                              • Gift
                                              • Glob
                                              • HD Wallet
                                              • Helm
                                              • Hood
                                              • Hoon
                                              • Invite Tree
                                              • Iris
                                              • Jael
                                              • Jet
                                              • Kelvin versioning
                                              • Kelvin versioning
                                              • Keyfile
                                              • Keywords
                                              • Khan
                                              • Kiln
                                              • Landscape
                                              • Leg
                                              • List
                                              • Loobean
                                              • Lull
                                              • Mark
                                              • Metals
                                              • Mold
                                              • Monad
                                              • Moon
                                              • Move
                                              • Nock
                                              • Noun
                                              • ~
                                              • OTA Updates
                                              • Path Prefix
                                              • Path
                                              • @p
                                              • Payload
                                              • Peek
                                              • pH
                                              • Pier
                                              • Pill
                                              • Planet
                                              • Poke
                                              • Proxies
                                              • Scry
                                              • Replay
                                              • Factory Reset
                                              • Roller
                                              • Naive rollups
                                              • Rune
                                              • Runtime
                                              • Sail
                                              • Sample
                                              • Scry
                                              • Senate
                                              • Ship
                                              • Slam
                                              • Spider
                                              • Sponsor
                                              • Star
                                              • String
                                              • Subject Oriented Programming
                                              • Subject
                                              • Subscription
                                              • Tape
                                              • Thread
                                              • Trap
                                              • Udon
                                              • Upgrade Proposal
                                              • Userspace
                                              • Vane
                                              • Vase
                                              • Vere
                                              • Voting
                                              • Warm atom
                                              • Wet Gate
                                              • Wing
                                              • Wire
                                              • Wrapper
                                              • ~zod
                                              • Zuse
                                              • Additional

                                                • Cryptography
                                                • Mips (Maps of Maps)
                                                • Software Distribution

                                                  • Overview
                                                  • Docket File
                                                  • Glob
                                                Urbit Developers
                                                • Hoon

                                                  • Overview
                                                  • Cheat Sheet
                                                  • Irregular forms
                                                  • Hoon Errors
                                                  • Hoon Style Guide
                                                  • Basic Types
                                                  • Advanced Types
                                                  • Auras
                                                  • Arvo
                                                  • Standard Library

                                                    • 1a: Basic Arithmetic
                                                    • 1b: Tree Addressing
                                                    • 1c: Molds and Mold-Builders
                                                    • 2a: Unit Logic
                                                    • 2b: List Logic
                                                    • 2c: Bit Arithmetic
                                                    • 2d: Bit Logic
                                                    • 2e: Insecure Hashing
                                                    • 2f: Noun Ordering
                                                    • 2g: Unsigned Powers
                                                    • 2h: Set Logic
                                                    • 2i: Map Logic
                                                    • 2j: Jar and Jug Logic
                                                    • 2k: Queue Logic
                                                    • 2l: Container from Container
                                                    • 2m: Container from Noun
                                                    • 2n: Functional Hacks
                                                    • 2o: Normalizing Containers
                                                    • 2p: Serialization
                                                    • 2q: Molds and Mold-Builders
                                                    • 3a: Modular and Signed Ints
                                                    • 3b: Floating Point
                                                    • 3c: Urbit Time
                                                    • 3d: SHA Hash Family
                                                    • 3e: AES encryption (Removed)
                                                    • 3f: Scrambling
                                                    • 3g: Molds and Mold-Builders
                                                    • 4a: Exotic Bases
                                                    • 4b: Text Processing
                                                    • 4c: Tank Printer
                                                    • 4d: Parsing (Tracing)
                                                    • 4e: Parsing (Combinators)
                                                    • 4f: Parsing (Rule-Builders)
                                                    • 4g: Parsing (Outside Caller)
                                                    • 4h: Parsing (ASCII Glyphs)
                                                    • 4i: Parsing (Useful Idioms)
                                                    • 4j: Parsing (Bases and Base Digits)
                                                    • 4k: Atom Printing
                                                    • 4l: Atom Parsing
                                                    • 4m: Formatting Functions
                                                    • 4n: Virtualization
                                                    • 4o: Molds
                                                    • 5a: Compiler Utilities
                                                    • 5b: Macro Expansion
                                                    • 5c: Compiler Backend & Prettyprinter
                                                    • 5d: Parser
                                                    • 5e: Molds and mold builders
                                                    • 5f: Profiling support
                                                    • Runes

                                                      • Constants (Atoms and Strings)
                                                      • + lus · Arms
                                                      • | bar · Cores
                                                      • $ buc · Structures
                                                      • % cen · Calls
                                                      • : col · Cells
                                                      • . dot · Nock
                                                      • / fas · Imports
                                                      • ^ ket · Casts
                                                      • ; mic · Make
                                                      • ~ sig · Hints
                                                      • = tis · Subject
                                                      • ? wut · Conditionals
                                                      • ! zap · Wild
                                                      • --, == Terminators
                                                      • Limbs and wings

                                                        • Limbs
                                                        • Wings
                                                        • Zuse

                                                          • 2d(1-5): To JSON, Wains
                                                          • 2d(6): From JSON
                                                          • 2d(7): From JSON (unit)
                                                          • 2e(2-3): Print & Parse JSON
                                                          • 2m: Ordered Maps
                                                        • Arvo

                                                          • Overview
                                                          • Ames

                                                            • Overview
                                                            • Cryptography
                                                            • API Reference
                                                            • Scry Reference
                                                            • Data Types
                                                            • Behn

                                                              • Overview
                                                              • API Reference
                                                              • Scry Reference
                                                              • Examples
                                                              • Clay

                                                                • Overview
                                                                • Architecture
                                                                • Using Clay
                                                                • Data Types
                                                                • Scry Reference
                                                                • API Reference
                                                                • Examples
                                                                • Marks

                                                                  • Overview
                                                                  • Writing Marks
                                                                  • Using Marks
                                                                  • Examples
                                                                • Dill

                                                                  • Overview
                                                                  • API Reference
                                                                  • Scry Reference
                                                                  • Data Types
                                                                  • Eyre

                                                                    • Overview
                                                                    • External API Reference
                                                                    • Internal API Reference
                                                                    • Scry Reference
                                                                    • Data Types
                                                                    • Guide
                                                                    • Gall

                                                                      • Overview
                                                                      • API Reference
                                                                      • Scry Reference
                                                                      • Data Types
                                                                      • Threads Reference
                                                                      • Iris

                                                                        • Overview
                                                                        • API Reference
                                                                        • Data Types
                                                                        • Example
                                                                        • Jael

                                                                          • Overview
                                                                          • API Reference
                                                                          • Scry Reference
                                                                          • Data Types
                                                                          • Examples
                                                                          • Khan

                                                                            • Overview
                                                                            • API Reference
                                                                            • Data Types
                                                                            • Example
                                                                            • Threads

                                                                              • Overview
                                                                              • HTTP API
                                                                              • Reference
                                                                              • Gall

                                                                                • Start Thread
                                                                                • Take Result
                                                                                • Take Facts
                                                                                • Stop Thread
                                                                                • Poke Thread
                                                                                • Examples

                                                                                  • Fetch JSON
                                                                                  • Child Thread
                                                                                  • Main-loop
                                                                                  • Poke Agent
                                                                                  • Scry
                                                                                  • Take Fact
                                                                                • Concepts

                                                                                  • Scries
                                                                                  • Subscriptions
                                                                                  • Tutorials

                                                                                    • Move Trace
                                                                                    • Reference

                                                                                      • Cryptography
                                                                                      • Filesystem Hierarchy
                                                                                    • Nock

                                                                                      • Nock Definition
                                                                                      • Explanation
                                                                                      • Example
                                                                                      • Implementations
                                                                                      • Vere

                                                                                        • C Runtime System
                                                                                        • Land of Nouns
                                                                                        • API overview by prefix
                                                                                        • C in Urbit
                                                                                        • Writing Jets
                                                                                        • Cryptography
                                                                                        • Azimuth

                                                                                          • Overview
                                                                                          • Urbit HD Wallet
                                                                                          • Azimuth Data Flow
                                                                                          • Azimuth.eth
                                                                                          • Ecliptic.eth
                                                                                          • Advanced Azimuth Tools
                                                                                          • Life and Rift
                                                                                          • Layer 2

                                                                                            • Layer 2 Overview
                                                                                            • Layer 2 Actions
                                                                                            • Transaction Format
                                                                                            • Rollers
                                                                                            • Roller HTTP RPC-API
                                                                                            • Custom Roller Tutorial
                                                                                          • Glossary

                                                                                            • Agent
                                                                                            • Ames
                                                                                            • API
                                                                                            • Aqua
                                                                                            • Arm
                                                                                            • Arvo
                                                                                            • Atom
                                                                                            • Aura
                                                                                            • Aural ASCII
                                                                                            • Azimuth
                                                                                            • Battery
                                                                                            • Behn
                                                                                            • Bowl
                                                                                            • Bridge
                                                                                            • Bunt
                                                                                            • Card
                                                                                            • Case
                                                                                            • Cask
                                                                                            • Cell
                                                                                            • Censures
                                                                                            • Claims
                                                                                            • Clay
                                                                                            • Cold atom
                                                                                            • Comet
                                                                                            • Commit
                                                                                            • Cons
                                                                                            • Context
                                                                                            • Cord
                                                                                            • Core
                                                                                            • Delegated Sending
                                                                                            • Desk
                                                                                            • Dill
                                                                                            • Document Proposal
                                                                                            • Dojo
                                                                                            • Door
                                                                                            • Double-boot
                                                                                            • Dry Gate
                                                                                            • Duct
                                                                                            • Ecliptic
                                                                                            • Entropy
                                                                                            • Event Log
                                                                                            • Eyre
                                                                                            • Face
                                                                                            • Fact
                                                                                            • Foo Bar Baz
                                                                                            • Galaxy
                                                                                            • Gall
                                                                                            • Garden
                                                                                            • Gate
                                                                                            • Generator
                                                                                            • Gift
                                                                                            • Glob
                                                                                            • HD Wallet
                                                                                            • Helm
                                                                                            • Hood
                                                                                            • Hoon
                                                                                            • Invite Tree
                                                                                            • Iris
                                                                                            • Jael
                                                                                            • Jet
                                                                                            • Kelvin versioning
                                                                                            • Kelvin versioning
                                                                                            • Keyfile
                                                                                            • Keywords
                                                                                            • Khan
                                                                                            • Kiln
                                                                                            • Landscape
                                                                                            • Leg
                                                                                            • List
                                                                                            • Loobean
                                                                                            • Lull
                                                                                            • Mark
                                                                                            • Metals
                                                                                            • Mold
                                                                                            • Monad
                                                                                            • Moon
                                                                                            • Move
                                                                                            • Nock
                                                                                            • Noun
                                                                                            • ~
                                                                                            • OTA Updates
                                                                                            • Path Prefix
                                                                                            • Path
                                                                                            • @p
                                                                                            • Payload
                                                                                            • Peek
                                                                                            • pH
                                                                                            • Pier
                                                                                            • Pill
                                                                                            • Planet
                                                                                            • Poke
                                                                                            • Proxies
                                                                                            • Scry
                                                                                            • Replay
                                                                                            • Factory Reset
                                                                                            • Roller
                                                                                            • Naive rollups
                                                                                            • Rune
                                                                                            • Runtime
                                                                                            • Sail
                                                                                            • Sample
                                                                                            • Scry
                                                                                            • Senate
                                                                                            • Ship
                                                                                            • Slam
                                                                                            • Spider
                                                                                            • Sponsor
                                                                                            • Star
                                                                                            • String
                                                                                            • Subject Oriented Programming
                                                                                            • Subject
                                                                                            • Subscription
                                                                                            • Tape
                                                                                            • Thread
                                                                                            • Trap
                                                                                            • Udon
                                                                                            • Upgrade Proposal
                                                                                            • Userspace
                                                                                            • Vane
                                                                                            • Vase
                                                                                            • Vere
                                                                                            • Voting
                                                                                            • Warm atom
                                                                                            • Wet Gate
                                                                                            • Wing
                                                                                            • Wire
                                                                                            • Wrapper
                                                                                            • ~zod
                                                                                            • Zuse
                                                                                            • Additional

                                                                                              • Cryptography
                                                                                              • Mips (Maps of Maps)
                                                                                              • Software Distribution

                                                                                                • Overview
                                                                                                • Docket File
                                                                                                • Glob
                                                                                              Reference/Hoon/Standard Library

                                                                                              4o: Molds

                                                                                              +$abel

                                                                                              Original sin: type

                                                                                              Old type, same as the new type.

                                                                                              Source

                                                                                              +$ abel typo

                                                                                              Examples

                                                                                              > *abel
                                                                                              #t/*

                                                                                              +$alas

                                                                                              Alias list

                                                                                              This is the type used in %brcb (|_ door) hoon type for +* alias arms.

                                                                                              Source

                                                                                              +$ alas (list (pair term hoon))

                                                                                              +$atom

                                                                                              Just an atom

                                                                                              This is the same as @.

                                                                                              Source

                                                                                              +$ atom @

                                                                                              Examples

                                                                                              > *atom
                                                                                              0
                                                                                              > `atom`'foo'
                                                                                              7.303.014

                                                                                              +$aura

                                                                                              'type' of atom

                                                                                              By convention, a short name for a category of atom. aura is circularly defined, with @ta being the aura of the ASCII subset commonly used in urbit.

                                                                                              Source

                                                                                              +$ aura @ta

                                                                                              Examples

                                                                                              See also: +$base, aura reference

                                                                                              > `aura`'ux'
                                                                                              ~.ux

                                                                                              +$base

                                                                                              Base type

                                                                                              A base type that nouns are built from. A base is either a noun, atom with aura, cell, boolean, null, or an empty set.

                                                                                              Source

                                                                                              +$ base :: base mold
                                                                                              $@ $? %noun :: any noun
                                                                                              %cell :: any cell
                                                                                              %flag :: loobean
                                                                                              %null :: ~ == 0
                                                                                              %void :: empty set
                                                                                              == ::
                                                                                              [%atom p=aura] :: atom

                                                                                              Examples

                                                                                              > *base
                                                                                              %void
                                                                                              > (ream '=|(^ !!)')
                                                                                              [%tsbr p=[%base p=%cell] q=[%zpzp ~]]

                                                                                              +$woof

                                                                                              Simple embed

                                                                                              An atom or some hoon.

                                                                                              Source

                                                                                              +$ woof $@(@ [~ p=hoon])

                                                                                              Examples

                                                                                              > *woof
                                                                                              0
                                                                                              > `woof`[~ %base p=%cell]
                                                                                              [~ p=[%base p=%cell]]
                                                                                              > `woof`'foo'
                                                                                              7.303.014

                                                                                              +$chum

                                                                                              Jet hint information

                                                                                              Jet hint information that must be present in the body of a ~/ or ~% rune. A chum can optionally contain a kelvin version, jet vendor, and version number.

                                                                                              Source

                                                                                              +$ chum $? lef=term :: jet name
                                                                                              [std=term kel=@] :: kelvin version
                                                                                              [ven=term pro=term kel=@] :: vendor and product
                                                                                              [ven=term pro=term ver=@ kel=@] :: all of the above
                                                                                              == ::

                                                                                              Examples

                                                                                              > `chum`'hi'
                                                                                              lef=%hi
                                                                                              > (ream '~/(%lob.314 !!)')
                                                                                              [%sgfs p=[std=%lob kel=314] q=[%zpzp ~]]

                                                                                              +$coil

                                                                                              Tuple of core information

                                                                                              Variance p, subject type q, and r: optional compiled nock, and arms. Used as an intermediate step during compilation and converted to a core.

                                                                                              Source

                                                                                              +$ coil $: p=garb :: name, wet=dry, vary
                                                                                              q=type :: context
                                                                                              r=(pair seminoun (map term tome)) :: chapters
                                                                                              == ::

                                                                                              +$garb

                                                                                              Core metadata

                                                                                              A triple of an optional name, polarity (wet/dry), and variance (%iron, etc).

                                                                                              Source

                                                                                              +$ garb (trel (unit term) poly vair)

                                                                                              +$poly

                                                                                              Polarity

                                                                                              Whether a core is wet or dry.

                                                                                              Source

                                                                                              +$ poly ?(%wet %dry)

                                                                                              +$foot

                                                                                              Cases of arms by variance model.

                                                                                              Source

                                                                                              +$ foot $% [%dry p=hoon] :: dry arm, geometric
                                                                                              [%wet p=hoon] :: wet arm, generic
                                                                                              ==

                                                                                              +$link

                                                                                              Lexical segment

                                                                                              Used for documentation.

                                                                                              Source

                                                                                              +$ link :: lexical segment
                                                                                              $% [%chat p=term] :: |chapter
                                                                                              [%cone p=aura q=atom] :: %constant
                                                                                              [%frag p=term] :: .leg
                                                                                              [%funk p=term] :: +arm
                                                                                              ==

                                                                                              +$crib

                                                                                              Summary and details

                                                                                              Summary and details for documentation.

                                                                                              Source

                                                                                              +$ crib [summary=cord details=(list sect)]

                                                                                              +$help

                                                                                              Documentation

                                                                                              Source

                                                                                              +$ help [links=(list link) =crib]

                                                                                              +$limb

                                                                                              Wing element

                                                                                              Reference into subject by tree address or name.

                                                                                              Source

                                                                                              +$ limb $@ term :: wing element
                                                                                              $% [%& p=axis] :: by geometry
                                                                                              [%| p=@ud q=(unit term)] :: by name
                                                                                              == ::

                                                                                              Examples

                                                                                              > (ream '^^$')
                                                                                              [%wing p=~[[%.n p=2 q=[~ %$]]]]

                                                                                              +$null

                                                                                              Null, nil, etc

                                                                                              Just ~.

                                                                                              Source

                                                                                              +$ null ~

                                                                                              Examples

                                                                                              > *null
                                                                                              ~

                                                                                              +$onyx

                                                                                              Arm activation

                                                                                              Source

                                                                                              +$ onyx (list (pair type foot))

                                                                                              +$opal

                                                                                              Wing match

                                                                                              Arm or leg of a wing.

                                                                                              Source

                                                                                              +$ opal :: limb match
                                                                                              $% [%& p=type] :: leg
                                                                                              [%| p=axis q=(set [p=type q=foot])] :: arm
                                                                                              == ::

                                                                                              +$pica

                                                                                              Prose or code

                                                                                              A (pair ? cord). If %.y it's prose and if %.n it's code. Used in documentation.

                                                                                              Source

                                                                                              +$ pica (pair ? cord)

                                                                                              +$palo

                                                                                              Wing trace, match

                                                                                              A $vein and a $opal.

                                                                                              Source

                                                                                              +$ palo (pair vein opal)

                                                                                              +$plat

                                                                                              %hoon, %type, %nock or %tank

                                                                                              Source

                                                                                              +$ plat
                                                                                              $? %hoon
                                                                                              %type
                                                                                              %nock
                                                                                              %tank
                                                                                              ==

                                                                                              +$pock

                                                                                              Changes

                                                                                              Source

                                                                                              +$ pock (pair axis nock)

                                                                                              +$port

                                                                                              Successful wing match

                                                                                              Source

                                                                                              +$ port (each palo (pair type nock))

                                                                                              +$spec

                                                                                              Structure definition AST.

                                                                                              Source

                                                                                              +$ spec :: structure definition
                                                                                              $~ [%base %null] ::
                                                                                              $% [%base p=base] :: base type
                                                                                              [%dbug p=spot q=spec] :: set debug
                                                                                              [%leaf p=term q=@] :: constant atom
                                                                                              [%like p=wing q=(list wing)] :: reference
                                                                                              [%loop p=term] :: hygienic reference
                                                                                              [%made p=(pair term (list term)) q=spec] :: annotate synthetic
                                                                                              [%make p=hoon q=(list spec)] :: composed spec
                                                                                              [%name p=term q=spec] :: annotate simple
                                                                                              [%over p=wing q=spec] :: relative to subject
                                                                                              :: ::
                                                                                              [%bcgr p=spec q=spec] :: $>, filter: require
                                                                                              [%bcbc p=spec q=(map term spec)] :: $$, recursion
                                                                                              [%bcbr p=spec q=hoon] :: $|, verify
                                                                                              [%bccb p=hoon] :: $_, example
                                                                                              [%bccl p=[i=spec t=(list spec)]] :: $:, tuple
                                                                                              [%bccn p=[i=spec t=(list spec)]] :: $%, head pick
                                                                                              [%bcdt p=spec q=(map term spec)] :: $., read-write core
                                                                                              [%bcgl p=spec q=spec] :: $<, filter: exclude
                                                                                              [%bchp p=spec q=spec] :: $-, function core
                                                                                              [%bckt p=spec q=spec] :: $^, cons pick
                                                                                              [%bcls p=stud q=spec] :: $+, standard
                                                                                              [%bcfs p=spec q=(map term spec)] :: $/, write-only core
                                                                                              [%bcmc p=hoon] :: $;, manual
                                                                                              [%bcpm p=spec q=hoon] :: $&, repair
                                                                                              [%bcsg p=hoon q=spec] :: $~, default
                                                                                              [%bctc p=spec q=(map term spec)] :: $`, read-only core
                                                                                              [%bcts p=skin q=spec] :: $=, name
                                                                                              [%bcpt p=spec q=spec] :: $@, atom pick
                                                                                              [%bcwt p=[i=spec t=(list spec)]] :: $?, full pick
                                                                                              [%bczp p=spec q=(map term spec)] :: $!, opaque core
                                                                                              == ::

                                                                                              Examples

                                                                                              > *spec
                                                                                              [%base p=%null]
                                                                                              > `spec`[%bccl ~[leaf+ud+1 leaf+ud+2]]
                                                                                              [%bccl p=[i=[%leaf p=%ud q=1] t=~[[%leaf p=%ud q=2]]]]

                                                                                              +$tent

                                                                                              Model builder

                                                                                              Source

                                                                                              +$ tent
                                                                                              $% [%| p=wing q=tent r=(list spec)] :: ~(p q r...)
                                                                                              [%& p=(list wing)] :: a.b:c.d
                                                                                              == ::

                                                                                              +$tiki

                                                                                              Test case

                                                                                              This is used when compiling ?- expressions and similar.

                                                                                              Source

                                                                                              +$ tiki :: test case
                                                                                              $% [%& p=(unit term) q=wing] :: simple wing
                                                                                              [%| p=(unit term) q=hoon] :: named wing
                                                                                              == ::

                                                                                              +$skin

                                                                                              Texture

                                                                                              This type is used for faces and similar by the compiler.

                                                                                              Source

                                                                                              +$ skin :: texture
                                                                                              $@ =term :: name/~[term %none]
                                                                                              $% [%base =base] :: base match
                                                                                              [%cell =skin =skin] :: pair
                                                                                              [%dbug =spot =skin] :: trace
                                                                                              [%leaf =aura =atom] :: atomic constant
                                                                                              [%help =help =skin] :: describe
                                                                                              [%name =term =skin] :: apply label
                                                                                              [%over =wing =skin] :: relative to
                                                                                              [%spec =spec =skin] :: cast to
                                                                                              [%wash depth=@ud] :: strip faces
                                                                                              == ::

                                                                                              +$tome

                                                                                              Core chapter

                                                                                              This type is used by the compiler for the contents of arms in cores.

                                                                                              Source

                                                                                              +$ tome (pair what (map term hoon))

                                                                                              +$tope

                                                                                              Topographic type

                                                                                              Describes the structure of a noun.

                                                                                              Source

                                                                                              +$ tope :: topographic type
                                                                                              $@ $? %& :: cell or atom
                                                                                              %| :: atom
                                                                                              == ::
                                                                                              (pair tope tope) :: cell

                                                                                              Examples

                                                                                              > *tope
                                                                                              %.n
                                                                                              > `tope`[%| %&]
                                                                                              [p=%.n q=%.y]

                                                                                              ++hoot

                                                                                              Hoon tools

                                                                                              Container core for internally-used XML structure types. XML structure types you'd typically use directly are defined in Standard Library section 5e.

                                                                                              Source

                                                                                              ++ hoot
                                                                                              |%

                                                                                              +$beer:hoot

                                                                                              Simple embed

                                                                                              Either a tape element or interpolated hoon expression in an XML attribute.

                                                                                              Source

                                                                                              +$ beer $@(char [~ p=hoon])

                                                                                              +$mane:hoot

                                                                                              XML name+space

                                                                                              XML tag name and optional namespace.

                                                                                              Source

                                                                                              +$ mane $@(@tas [@tas @tas])

                                                                                              Examples

                                                                                              > (en-xml:html ;foo;)
                                                                                              "<foo></foo>"
                                                                                              > (en-xml:html ;foo_bar;)
                                                                                              "<foo:bar></foo:bar>"
                                                                                              > `manx:hoot`;foo_bar;
                                                                                              [g=[n=[%foo %bar] a=~] c=~]
                                                                                              > `mane:hoot`n.g:`manx`;foo_bar;
                                                                                              [%foo %bar]
                                                                                              > `mane:hoot`n.g:`manx:hoot`;foo;
                                                                                              %foo

                                                                                              +$manx:hoot

                                                                                              Dynamic XML node

                                                                                              An XML element which may contain text, attributes, and other elements.

                                                                                              g is a $marx:hoot (a tag) and c is a $marl:hoot (its contents).

                                                                                              Source

                                                                                              +$ manx $~([[%$ ~] ~] [g=marx c=marl])

                                                                                              Examples

                                                                                              > *manx:hoot
                                                                                              [g=[n=%$ a=~] c=~
                                                                                              > `manx:hoot`;foo;
                                                                                              [g=[n=%foo a=~] c=~]
                                                                                              > (en-xml:html `manx:hoot`;foo;)
                                                                                              "<foo></foo>"
                                                                                              > =a ^- manx:hoot
                                                                                              ;foo
                                                                                              ;bar: abc
                                                                                              ;baz
                                                                                              ;xxx: hello
                                                                                              ==
                                                                                              ==
                                                                                              > a
                                                                                              [ g=[n=%foo a=~]
                                                                                              c
                                                                                              ~[
                                                                                              [ g=[n=%bar a=~]
                                                                                              c=~[[g=[n=%$ a=~[[n=%$ v="abc"]]] c=~]]
                                                                                              ]
                                                                                              [ g=[n=%baz a=~]
                                                                                              c
                                                                                              ~[
                                                                                              [ g=[n=%xxx a=~]
                                                                                              c=~[[g=[n=%$ a=~[[n=%$ v="hello"]]] c=~]]
                                                                                              ]
                                                                                              ]
                                                                                              ]
                                                                                              ]
                                                                                              ]
                                                                                              > (en-xml:html a)
                                                                                              "<foo><bar>abc</bar><baz><xxx>hello</xxx></baz></foo>"

                                                                                              +$marl:hoot

                                                                                              Dynamic XML nodes

                                                                                              A list of XML nodes - maybe with interpolation and recursion. See $tuna:hoot.

                                                                                              Source

                                                                                              +$ marl (list tuna)

                                                                                              Examples

                                                                                              > *marl
                                                                                              ~
                                                                                              > ^- marl:hoot
                                                                                              ;=
                                                                                              ;foo: abc
                                                                                              ;bar: def
                                                                                              ==
                                                                                              ~[
                                                                                              [g=[n=%foo a=~] c=~[[g=[n=%$ a=~[[n=%$ v=~['a' 'b' 'c']]]] c=~]]]
                                                                                              [g=[n=%bar a=~] c=~[[g=[n=%$ a=~[[n=%$ v=~['d' 'e' 'f']]]] c=~]]]
                                                                                              ]
                                                                                              > %- en-xml:html
                                                                                              ;baz
                                                                                              ;=
                                                                                              ;foo: abc
                                                                                              ;bar: def
                                                                                              ==
                                                                                              ==
                                                                                              "<baz><foo>abc</foo><bar>def</bar></baz>"

                                                                                              +$mart:hoot

                                                                                              Dynamic XML attributes

                                                                                              A list of atributes for an XML tag. For each list item, n is a $mane:hoot (an attribute name with optional namespace) and v is a (list beer:hoot) (the attribute itself, maybe with interpolated hoon).

                                                                                              Source

                                                                                              +$ mart (list [n=mane v=(list beer)])

                                                                                              Examples

                                                                                              > *mart:hoot
                                                                                              ~
                                                                                              > `manx:hoot`;foo.bar;
                                                                                              [g=[n=%foo a=~[[n=%class v=~['b' 'a' 'r']]]] c=~]
                                                                                              > `mart:hoot`a.g:`manx:hoot`;foo.bar;
                                                                                              ~[[n=%class v=~['b' 'a' 'r']]]
                                                                                              > (en-xml:html ;foo.bar;)
                                                                                              "<foo class=\"bar\"></foo>"

                                                                                              +$marx:hoot

                                                                                              Dynamic XML tag

                                                                                              An XML tag with optional attributes. n is a $mane:hoot (the tag name with optional namespace) and a is a $mart:hoot (any XML attributes).

                                                                                              Source

                                                                                              +$ marx $~([%$ ~] [n=mane a=mart])

                                                                                              Examples

                                                                                              > `manx:hoot`;foo.bar;
                                                                                              [g=[n=%foo a=~[[n=%class v=~['b' 'a' 'r']]]] c=~]
                                                                                              > `marx:hoot`g:`manx:hoot`;foo.bar;
                                                                                              [n=%foo a=~[[n=%class v=~['b' 'a' 'r']]]]
                                                                                              > (en-xml:html ;foo.bar;)
                                                                                              "<foo class=\"bar\"></foo>"

                                                                                              +$mare:hoot

                                                                                              Node or nodes

                                                                                              If %.y, a $manx:hoot (single XML node). If %.n, a $marl:hoot (list of XML nodes).

                                                                                              Source

                                                                                              +$ mare (each manx marl)

                                                                                              Examples

                                                                                              > *mare:hoot
                                                                                              [%.y p=[g=[n=%$ a=~] c=~]]
                                                                                              > `mare:hoot`[%.y ;foo.bar;]
                                                                                              [%.y p=[g=[n=%foo a=~[[n=%class v=~['b' 'a' 'r']]]] c=~]]
                                                                                              > `mare:hoot`[%.n ~[;foo.bar; ;baz;]]
                                                                                              [%.n p=~[[g=[n=%foo a=~[[n=%class v=~['b' 'a' 'r']]]] c=~] [g=[n=%baz a=~] c=~]]]

                                                                                              +$maru:hoot

                                                                                              Interpolation or nodes

                                                                                              If %.y, a $tuna:hoot. If %.n, a $marl:hoot.

                                                                                              Source

                                                                                              +$ maru (each tuna marl)

                                                                                              +$tuna:hoot

                                                                                              Maybe interpolation

                                                                                              Kinds of nodes. Either an ordinary $manx:hoot, or else a plain tape, a $marl:hoot, or a function call.

                                                                                              Source

                                                                                              +$ tuna
                                                                                              $~ [[%$ ~] ~]
                                                                                              $^ manx
                                                                                              $: ?(%tape %manx %marl %call)
                                                                                              p=hoon
                                                                                              ==

                                                                                              +$hoon

                                                                                              Hoon AST

                                                                                              See the Rune section of the Hoon reference for details of what many of these relate to.

                                                                                              Source

                                                                                              +$ hoon ::
                                                                                              $~ [%zpzp ~]
                                                                                              $^ [p=hoon q=hoon] ::
                                                                                              $% ::
                                                                                              [%$ p=axis] :: simple leg
                                                                                              :: ::
                                                                                              [%base p=base] :: base spec
                                                                                              [%bust p=base] :: bunt base
                                                                                              [%dbug p=spot q=hoon] :: debug info in trace
                                                                                              [%eror p=tape] :: assembly error
                                                                                              [%hand p=type q=nock] :: premade result
                                                                                              [%note p=note q=hoon] :: annotate
                                                                                              [%fits p=hoon q=wing] :: underlying ?=
                                                                                              [%knit p=(list woof)] :: assemble string
                                                                                              [%leaf p=(pair term @)] :: symbol spec
                                                                                              [%limb p=term] :: take limb
                                                                                              [%lost p=hoon] :: not to be taken
                                                                                              [%rock p=term q=*] :: fixed constant
                                                                                              [%sand p=term q=*] :: unfixed constant
                                                                                              [%tell p=(list hoon)] :: render as tape
                                                                                              [%tune p=$@(term tune)] :: minimal face
                                                                                              [%wing p=wing] :: take wing
                                                                                              [%yell p=(list hoon)] :: render as tank
                                                                                              [%xray p=manx:hoot] :: ;foo; templating
                                                                                              :: :::::: cores
                                                                                              [%brbc sample=(lest term) body=spec] :: |$
                                                                                              [%brcb p=spec q=alas r=(map term tome)] :: |_
                                                                                              [%brcl p=hoon q=hoon] :: |:
                                                                                              [%brcn p=(unit term) q=(map term tome)] :: |%
                                                                                              [%brdt p=hoon] :: |.
                                                                                              [%brkt p=hoon q=(map term tome)] :: |^
                                                                                              [%brhp p=hoon] :: |-
                                                                                              [%brsg p=spec q=hoon] :: |~
                                                                                              [%brtr p=spec q=hoon] :: |*
                                                                                              [%brts p=spec q=hoon] :: |=
                                                                                              [%brpt p=(unit term) q=(map term tome)] :: |@
                                                                                              [%brwt p=hoon] :: |?
                                                                                              :: :::::: tuples
                                                                                              [%clcb p=hoon q=hoon] :: :_ [q p]
                                                                                              [%clkt p=hoon q=hoon r=hoon s=hoon] :: :^ [p q r s]
                                                                                              [%clhp p=hoon q=hoon] :: :- [p q]
                                                                                              [%clls p=hoon q=hoon r=hoon] :: :+ [p q r]
                                                                                              [%clsg p=(list hoon)] :: :~ [p ~]
                                                                                              [%cltr p=(list hoon)] :: :* p as a tuple
                                                                                              :: :::::: invocations
                                                                                              [%cncb p=wing q=(list (pair wing hoon))] :: %_
                                                                                              [%cndt p=hoon q=hoon] :: %.
                                                                                              [%cnhp p=hoon q=hoon] :: %-
                                                                                              [%cncl p=hoon q=(list hoon)] :: %:
                                                                                              [%cntr p=wing q=hoon r=(list (pair wing hoon))] :: %*
                                                                                              [%cnkt p=hoon q=hoon r=hoon s=hoon] :: %^
                                                                                              [%cnls p=hoon q=hoon r=hoon] :: %+
                                                                                              [%cnsg p=wing q=hoon r=(list hoon)] :: %~
                                                                                              [%cnts p=wing q=(list (pair wing hoon))] :: %=
                                                                                              :: :::::: nock
                                                                                              [%dtkt p=spec q=hoon] :: .^ nock 11
                                                                                              [%dtls p=hoon] :: .+ nock 4
                                                                                              [%dttr p=hoon q=hoon] :: .* nock 2
                                                                                              [%dtts p=hoon q=hoon] :: .= nock 5
                                                                                              [%dtwt p=hoon] :: .? nock 3
                                                                                              :: :::::: type conversion
                                                                                              [%ktbr p=hoon] :: ^| contravariant
                                                                                              [%ktdt p=hoon q=hoon] :: ^. self-cast
                                                                                              [%ktls p=hoon q=hoon] :: ^+ expression cast
                                                                                              [%kthp p=spec q=hoon] :: ^- structure cast
                                                                                              [%ktpm p=hoon] :: ^& covariant
                                                                                              [%ktsg p=hoon] :: ^~ constant
                                                                                              [%ktts p=skin q=hoon] :: ^= label
                                                                                              [%ktwt p=hoon] :: ^? bivariant
                                                                                              [%kttr p=spec] :: ^* example
                                                                                              [%ktcl p=spec] :: ^: filter
                                                                                              :: :::::: hints
                                                                                              [%sgbr p=hoon q=hoon] :: ~| sell on trace
                                                                                              [%sgcb p=hoon q=hoon] :: ~_ tank on trace
                                                                                              [%sgcn p=chum q=hoon r=tyre s=hoon] :: ~% general jet hint
                                                                                              [%sgfs p=chum q=hoon] :: ~/ function j-hint
                                                                                              [%sggl p=$@(term [p=term q=hoon]) q=hoon] :: ~< backward hint
                                                                                              [%sggr p=$@(term [p=term q=hoon]) q=hoon] :: ~> forward hint
                                                                                              [%sgbc p=term q=hoon] :: ~$ profiler hit
                                                                                              [%sgls p=@ q=hoon] :: ~+ cache=memoize
                                                                                              [%sgpm p=@ud q=hoon r=hoon] :: ~& printf=priority
                                                                                              [%sgts p=hoon q=hoon] :: ~= don't duplicate
                                                                                              [%sgwt p=@ud q=hoon r=hoon s=hoon] :: ~? tested printf
                                                                                              [%sgzp p=hoon q=hoon] :: ~! type on trace
                                                                                              :: :::::: miscellaneous
                                                                                              [%mcts p=marl:hoot] :: ;= list templating
                                                                                              [%mccl p=hoon q=(list hoon)] :: ;: binary to nary
                                                                                              [%mcfs p=hoon] :: ;/ [%$ [%$ p ~] ~]
                                                                                              [%mcgl p=spec q=hoon r=hoon s=hoon] :: ;< bind
                                                                                              [%mcsg p=hoon q=(list hoon)] :: ;~ kleisli arrow
                                                                                              [%mcmc p=spec q=hoon] :: ;; normalize
                                                                                              :: :::::: compositions
                                                                                              [%tsbr p=spec q=hoon] :: =| push bunt
                                                                                              [%tscl p=(list (pair wing hoon)) q=hoon] :: =: q w= p changes
                                                                                              [%tsfs p=skin q=hoon r=hoon] :: =/ typed variable
                                                                                              [%tsmc p=skin q=hoon r=hoon] :: =; =/(q p r)
                                                                                              [%tsdt p=wing q=hoon r=hoon] :: =. r with p as q
                                                                                              [%tswt p=wing q=hoon r=hoon s=hoon] :: =? conditional =.
                                                                                              [%tsgl p=hoon q=hoon] :: =< =>(q p)
                                                                                              [%tshp p=hoon q=hoon] :: =- =+(q p)
                                                                                              [%tsgr p=hoon q=hoon] :: => q w=subject p
                                                                                              [%tskt p=skin q=wing r=hoon s=hoon] :: =^ state machine
                                                                                              [%tsls p=hoon q=hoon] :: =+ q w=[p subject]
                                                                                              [%tssg p=(list hoon)] :: =~ hoon stack
                                                                                              [%tstr p=(pair term (unit spec)) q=hoon r=hoon] :: =* new style
                                                                                              [%tscm p=hoon q=hoon] :: =, overload p in q
                                                                                              :: :::::: conditionals
                                                                                              [%wtbr p=(list hoon)] :: ?| loobean or
                                                                                              [%wthp p=wing q=(list (pair spec hoon))] :: ?- pick case in q
                                                                                              [%wtcl p=hoon q=hoon r=hoon] :: ?: if=then=else
                                                                                              [%wtdt p=hoon q=hoon r=hoon] :: ?. ?:(p r q)
                                                                                              [%wtkt p=wing q=hoon r=hoon] :: ?^ if p is a cell
                                                                                              [%wtgl p=hoon q=hoon] :: ?< ?:(p !! q)
                                                                                              [%wtgr p=hoon q=hoon] :: ?> ?:(p q !!)
                                                                                              [%wtls p=wing q=hoon r=(list (pair spec hoon))] :: ?+ ?- w=default
                                                                                              [%wtpm p=(list hoon)] :: ?& loobean and
                                                                                              [%wtpt p=wing q=hoon r=hoon] :: ?@ if p is atom
                                                                                              [%wtsg p=wing q=hoon r=hoon] :: ?~ if p is null
                                                                                              [%wthx p=skin q=wing] :: ?# if q matches p
                                                                                              [%wtts p=spec q=wing] :: ?= if q matches p
                                                                                              [%wtzp p=hoon] :: ?! loobean not
                                                                                              :: :::::: special
                                                                                              [%zpcm p=hoon q=hoon] :: !,
                                                                                              [%zpgr p=hoon] :: !>
                                                                                              [%zpgl p=spec q=hoon] :: !<
                                                                                              [%zpmc p=hoon q=hoon] :: !;
                                                                                              [%zpts p=hoon] :: !=
                                                                                              [%zppt p=(list wing) q=hoon r=hoon] :: !@
                                                                                              [%zpwt p=$@(p=@ [p=@ q=@]) q=hoon] :: !?
                                                                                              [%zpzp ~] :: !!
                                                                                              == ::

                                                                                              Examples

                                                                                              > *hoon
                                                                                              [%zpzp ~]
                                                                                              > `hoon`(ream '|=([a=@ b=@] [b a])')
                                                                                              [ %brts
                                                                                              p
                                                                                              [ %bccl
                                                                                              p
                                                                                              [ i=[%bcts p=term=%a q=[%base p=[%atom p=~.]]]
                                                                                              t=~[[%bcts p=term=%b q=[%base p=[%atom p=~.]]]]
                                                                                              ]
                                                                                              ]
                                                                                              q=[%cltr p=~[[%wing p=~[%b]] [%wing p=~[%a]]]]
                                                                                              ]

                                                                                              +$tyre

                                                                                              List, term hoon

                                                                                              Associative list of term hoon, used in jet hint processing.

                                                                                              Source

                                                                                              +$ tyre (list [p=term q=hoon]) ::

                                                                                              +$tyke

                                                                                              List of 'maybe' hoons

                                                                                              List of unit hoon, or gaps left to be inferred, in path parsing. When you use a path such as /=base=/gen/code the path is in fact a tyke, where the = are inferred from your current path.

                                                                                              Source

                                                                                              +$ tyke (list (unit hoon))

                                                                                              +$nock

                                                                                              Virtual nock.

                                                                                              See the Nock documentation for details.

                                                                                              Source

                                                                                              +$ nock $^ [p=nock q=nock] :: autocons
                                                                                              $% [%1 p=*] :: constant
                                                                                              [%2 p=nock q=nock] :: compose
                                                                                              [%3 p=nock] :: cell test
                                                                                              [%4 p=nock] :: increment
                                                                                              [%5 p=nock q=nock] :: equality test
                                                                                              [%6 p=nock q=nock r=nock] :: if, then, else
                                                                                              [%7 p=nock q=nock] :: serial compose
                                                                                              [%8 p=nock q=nock] :: push onto subject
                                                                                              [%9 p=@ q=nock] :: select arm and fire
                                                                                              [%10 p=[p=@ q=nock] q=nock] :: edit
                                                                                              [%11 p=$@(@ [p=@ q=nock]) q=nock] :: hint
                                                                                              [%12 p=nock q=nock] :: grab data from sky
                                                                                              [%0 p=@] :: axis select
                                                                                              == ::

                                                                                              Examples

                                                                                              > !=([+(.) 20 -<])
                                                                                              [[4 0 1] [1 20] 0 4]
                                                                                              > (nock !=([+(.) 20]))
                                                                                              [p=[%4 p=[%0 p=1]] q=[%1 p=20]]

                                                                                              +$note

                                                                                              Type annotation

                                                                                              Used for documentation.

                                                                                              Source

                                                                                              +$ note :: type annotation
                                                                                              $% [%help p=help] :: documentation
                                                                                              [%know p=stud] :: global standard
                                                                                              [%made p=term q=(unit (list wing))] :: structure
                                                                                              == ::

                                                                                              +$type

                                                                                              Hoon type type

                                                                                              Source

                                                                                              +$ type $~ %noun ::
                                                                                              $@ $? %noun :: any nouns
                                                                                              %void :: no noun
                                                                                              == ::
                                                                                              $% [%atom p=term q=(unit @)] :: atom / constant
                                                                                              [%cell p=type q=type] :: ordered pair
                                                                                              [%core p=type q=coil] :: object
                                                                                              [%face p=$@(term tune) q=type] :: namespace
                                                                                              [%fork p=(set type)] :: union
                                                                                              [%hint p=(pair type note) q=type] :: annotation
                                                                                              [%hold p=type q=hoon] :: lazy evaluation
                                                                                              == ::

                                                                                              Examples

                                                                                              > `type`[%cell [%atom %ud ~] [%atom %ud ~]]
                                                                                              #t/[@ud @ud]

                                                                                              +$tony

                                                                                              $tone done right

                                                                                              An intermediate Nock computation result. Similar to a $toon but without a rendered stack trace.

                                                                                              Source

                                                                                              +$ tony :: ++tone done right
                                                                                              $% [%0 p=tine q=*] :: success
                                                                                              [%1 p=(set)] :: blocks
                                                                                              [%2 p=(list [@ta *])] :: error ~_s
                                                                                              == ::

                                                                                              +$tine

                                                                                              Partial noun

                                                                                              Source

                                                                                              +$ tine :: partial noun
                                                                                              $@ ~ :: open
                                                                                              $% [%& p=tine q=tine] :: half-blocked
                                                                                              [%| p=(set)] :: fully blocked
                                                                                              == ::

                                                                                              +$tool

                                                                                              Type decoration

                                                                                              Source

                                                                                              +$ tool $@(term tune)

                                                                                              +$tune

                                                                                              Complex

                                                                                              Source

                                                                                              +$ tune :: complex
                                                                                              $~ [~ ~] ::
                                                                                              $: p=(map term (unit hoon)) :: aliases
                                                                                              q=(list hoon) :: bridges
                                                                                              == ::

                                                                                              +$typo

                                                                                              Old type

                                                                                              Same as $type

                                                                                              Source

                                                                                              +$ typo type

                                                                                              +$vase

                                                                                              Type-value pair

                                                                                              Typed data. A $vase is used wherever typed data is explicitly worked with.

                                                                                              Source

                                                                                              +$ vase [p=type q=*]

                                                                                              Examples

                                                                                              > *vase
                                                                                              [#t/* q=0]
                                                                                              > !>([2 2])
                                                                                              [#t/[@ud @ud] q=[2 2]]
                                                                                              > !>('foo')
                                                                                              [#t/@t q=7.303.014]

                                                                                              +$vise

                                                                                              Old vase

                                                                                              Same as a $vase.

                                                                                              Source

                                                                                              +$ vise [p=typo q=*]

                                                                                              +$vial

                                                                                              co/contra/in/bi

                                                                                              Covariant, contravariant, invariant, bivariant.

                                                                                              Source

                                                                                              +$ vial ?(%read %rite %both %free)

                                                                                              +$vair

                                                                                              in/contra/bi/co

                                                                                              Core variance.

                                                                                              • %gold - invariant payload.
                                                                                              • %iron - contravariant sample.
                                                                                              • %lead - bivariant sample.
                                                                                              • %zinc - covariant sample.

                                                                                              See the Hoon School lesson on type polymorphism for more details.

                                                                                              Source

                                                                                              +$ vair ?(%gold %iron %lead %zinc)

                                                                                              +$vein

                                                                                              Search trace

                                                                                              Noun search trace.

                                                                                              Source

                                                                                              +$ vein (list (unit axis))

                                                                                              +$sect

                                                                                              Paragraph

                                                                                              Used in documentation.

                                                                                              Source

                                                                                              +$ sect (list pica)

                                                                                              +$whit

                                                                                              Documentation

                                                                                              Source

                                                                                              +$ whit ::
                                                                                              $: lab=(unit term) :: label
                                                                                              boy=(unit (pair cord (list sect))) :: body
                                                                                              def=(map term (pair cord (list sect))) :: definitions
                                                                                              use=(set term) :: defs used
                                                                                              == ::

                                                                                              +$what

                                                                                              Help slogan/section

                                                                                              Source

                                                                                              +$ what (unit (pair cord (list sect)))

                                                                                              +$wing

                                                                                              Search path

                                                                                              Address in subject. A $wing is a path to a value in the subject. A term alone is the trivial case of a $wing.

                                                                                              Source

                                                                                              +$ wing (list limb)

                                                                                              Examples

                                                                                              > (ream 'a.+.c')
                                                                                              [%wing p=~[%a [%.y p=3] %c]]
                                                                                              > (wing +:(ream 'a.+.c'))
                                                                                              ~[%a [%.y p=3] %c]

                                                                                              +$block

                                                                                              Abstract identity of resource awaited

                                                                                              Source

                                                                                              +$ block
                                                                                              path

                                                                                              +$result

                                                                                              Internal interpreter result

                                                                                              Source

                                                                                              +$ result
                                                                                              $@(~ seminoun)

                                                                                              +$thunk

                                                                                              Fragment constructor

                                                                                              Source

                                                                                              +$ thunk
                                                                                              $-(@ud (unit noun))

                                                                                              +$doss

                                                                                              Profiling

                                                                                              Source

                                                                                              +$ doss
                                                                                              $: mon=moan :: sample count
                                                                                              hit=(map term @ud) :: hit points
                                                                                              cut=(map path hump) :: cut points
                                                                                              ==

                                                                                              +$moan

                                                                                              Profiling: sample metric

                                                                                              Source

                                                                                              +$ moan :: sample metric
                                                                                              $: fun=@ud :: samples in C
                                                                                              noc=@ud :: samples in nock
                                                                                              glu=@ud :: samples in glue
                                                                                              mal=@ud :: samples in alloc
                                                                                              far=@ud :: samples in frag
                                                                                              coy=@ud :: samples in copy
                                                                                              euq=@ud :: samples in equal
                                                                                              == ::

                                                                                              +$hump

                                                                                              Profiling

                                                                                              Source

                                                                                              +$ hump
                                                                                              $: mon=moan :: sample count
                                                                                              out=(map path @ud) :: calls out of
                                                                                              inn=(map path @ud) :: calls into
                                                                                              ==

                                                                                              <-

                                                                                              4n: Virtualization

                                                                                              5a: Compiler Utilities

                                                                                              ->

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                                                                                              Last modified June 13, 2023