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                                                Urbit Developers
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                                                  • Basic Types
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                                                  • 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
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                                                                                              Reference/Hoon/Standard Library

                                                                                              4m: Formatting Functions

                                                                                              ++scot

                                                                                              Render dime as cord

                                                                                              Renders a dime mol as a cord.

                                                                                              Accepts

                                                                                              mol is a dime.

                                                                                              Produces

                                                                                              A cord.

                                                                                              Source

                                                                                              ++ scot
                                                                                              ~/ %scot
                                                                                              |=(mol=dime ~(rent co %$ mol))

                                                                                              Examples

                                                                                              > (scot %p ~pillyt)
                                                                                              ~.~pillyt
                                                                                              > `@t`(scot %p ~pillyt)
                                                                                              '~pillyt'
                                                                                              > `@t`(scot %ux 0x12)
                                                                                              '0x12'
                                                                                              > `@t`(scot %if .127.0.0.1)
                                                                                              '.127.0.0.1'
                                                                                              > `@t`(scot %ta ~.asd_a)
                                                                                              '~.asd_a'

                                                                                              ++scow

                                                                                              Render dime as tape

                                                                                              Renders a dime mol as a tape.

                                                                                              Accepts

                                                                                              mol is a dime.

                                                                                              Produces

                                                                                              A tape.

                                                                                              Source

                                                                                              ++ scow
                                                                                              ~/ %scow
                                                                                              |=(mol=dime ~(rend co %$ mol))

                                                                                              Examples

                                                                                              > (scow %p ~pillyt)
                                                                                              "~pillyt"
                                                                                              > (scow %ux 0x12)
                                                                                              "0x12"
                                                                                              > (scow %if .127.0.0.1)
                                                                                              ".127.0.0.1"
                                                                                              > (scow %ta ~.asd_a)
                                                                                              "~.asd_a"

                                                                                              ++slat

                                                                                              Curried slaw

                                                                                              Produces a gate that parses a knot txt to a unit containing the atom of the aura specified by mod. The unit will be null if parsing failed.

                                                                                              Accepts

                                                                                              mod is a knot.

                                                                                              txt is a cord.

                                                                                              Produces

                                                                                              A (unit @).

                                                                                              Source

                                                                                              ++ slat |=(mod=@tas |=(txt=@ta (slaw mod txt)))

                                                                                              Examples

                                                                                              > `(unit @p)`((slat %p) '~pillyt')
                                                                                              [~ ~pillyt]
                                                                                              > `(unit @ux)`((slat %ux) '0x12')
                                                                                              [~ 0x12]
                                                                                              > `(unit @if)`((slat %if) '.127.0.0.1')
                                                                                              [~ .127.0.0.1]
                                                                                              > `(unit @ta)`((slat %ta) '~.asd_a')
                                                                                              [~ ~.asd_a]

                                                                                              ++slav

                                                                                              Demand: parse cord with input aura

                                                                                              Parses a cord txt to an atom of the aura specificed by mod. Crashes if it fails to parse.

                                                                                              Accepts

                                                                                              mod is a term

                                                                                              txt is a knot.

                                                                                              Produces

                                                                                              an atom.

                                                                                              Source

                                                                                              ++ slav |=([mod=@tas txt=@ta] (need (slaw mod txt)))

                                                                                              Examples

                                                                                              > `@p`(slav %p '~pillyt')
                                                                                              ~pillyt
                                                                                              > `@p`(slav %p '~pillam')
                                                                                              ! exit
                                                                                              > `@ux`(slav %ux '0x12')
                                                                                              0x12
                                                                                              > `@ux`(slav %ux '0b10')
                                                                                              ! exit
                                                                                              > `@if`(slav %if '.127.0.0.1')
                                                                                              .127.0.0.1
                                                                                              > `@if`(slav %if '.fe80.0.0.202')
                                                                                              ! exit
                                                                                              > `@ta`(slav %ta '~.asd_a')
                                                                                              ~.asd_a
                                                                                              > `@ta`(slav %ta '~~asd-a')
                                                                                              ! exit

                                                                                              ++slaw

                                                                                              Parse cord to input aura

                                                                                              Parses a cord txt to a unit containing the atom of the aura specified by mod. The unit is null if parsing failed.

                                                                                              Accepts

                                                                                              mod is a term.

                                                                                              txt is a knot.

                                                                                              Produces

                                                                                              A (unit @).

                                                                                              Source

                                                                                              ++ slaw
                                                                                              ~/ %slaw
                                                                                              |= [mod=@tas txt=@ta]
                                                                                              ^- (unit @)
                                                                                              ?+ mod
                                                                                              :: slow fallback case to the full slay
                                                                                              ::
                                                                                              =+ con=(slay txt)
                                                                                              ?.(&(?=([~ %$ @ @] con) =(p.p.u.con mod)) ~ [~ q.p.u.con])
                                                                                              ::
                                                                                              %da
                                                                                              (rush txt ;~(pfix sig (cook year when:so)))
                                                                                              ::
                                                                                              %p
                                                                                              (rush txt ;~(pfix sig fed:ag))
                                                                                              ::
                                                                                              %ud
                                                                                              (rush txt dem:ag)
                                                                                              ::
                                                                                              %ux
                                                                                              (rush txt ;~(pfix (jest '0x') hex:ag))
                                                                                              ::
                                                                                              %uv
                                                                                              (rush txt ;~(pfix (jest '0v') viz:ag))
                                                                                              ::
                                                                                              %ta
                                                                                              (rush txt ;~(pfix ;~(plug sig dot) urs:ab))
                                                                                              ::
                                                                                              %tas
                                                                                              (rush txt sym)
                                                                                              ==

                                                                                              Examples

                                                                                              > `(unit @p)`(slaw %p '~pillyt')
                                                                                              [~ ~pillyt]
                                                                                              > `(unit @p)`(slaw %p '~pillam')
                                                                                              ~
                                                                                              > `(unit @ux)`(slaw %ux '0x12')
                                                                                              [~ 0x12]
                                                                                              > `(unit @ux)`(slaw %ux '0b10')
                                                                                              ~
                                                                                              > `(unit @if)`(slaw %if '.127.0.0.1')
                                                                                              [~ .127.0.0.1]
                                                                                              > `(unit @if)`(slaw %if '.fe80.0.0.202')
                                                                                              ~
                                                                                              > `(unit @ta)`(slaw %ta '~.asd_a')
                                                                                              [~ ~.asd_a]
                                                                                              > `(unit @ta)`(slaw %ta '~~asd-a')
                                                                                              ~

                                                                                              ++slay

                                                                                              Parse cord to coin

                                                                                              Parses a cord txt to the unit of a coin.

                                                                                              Accepts

                                                                                              txt is a @ta.

                                                                                              Produces

                                                                                              A (unit coin).

                                                                                              Source

                                                                                              ++ slay
                                                                                              |= txt=@ta ^- (unit coin)
                                                                                              =+ ^= vex
                                                                                              ?: (gth 0x7fff.ffff txt) :: XX petty cache
                                                                                              ~+ ((full nuck:so) [[1 1] (trip txt)])
                                                                                              ((full nuck:so) [[1 1] (trip txt)])
                                                                                              ?~ q.vex
                                                                                              ~
                                                                                              [~ p.u.q.vex]

                                                                                              Examples

                                                                                              > (slay '~pillyt')
                                                                                              [~ [%$ p=[p=~.p q=13.184]]]
                                                                                              > (slay '0x12')
                                                                                              [~ [%$ p=[p=~.ux q=18]]]
                                                                                              > (slay '.127.0.0.1')
                                                                                              [~ [%$ p=[p=~.if q=2.130.706.433]]]
                                                                                              > (slay '!')
                                                                                              ~

                                                                                              ++smyt

                                                                                              Render path as tank

                                                                                              Renders the path bon as a tank, which is used for pretty-printing.

                                                                                              Accepts

                                                                                              bon is a path.

                                                                                              Produces

                                                                                              A tank.

                                                                                              Source

                                                                                              ++ smyt
                                                                                              |= bon=path ^- tank
                                                                                              :+ %rose [['/' ~] ['/' ~] ~]
                                                                                              (turn bon |=(a=@ [%leaf (trip a)]))

                                                                                              Examples

                                                                                              > (smyt %)
                                                                                              [ %rose
                                                                                              p=[p="/" q="/" r=""]
                                                                                              q
                                                                                              ~[
                                                                                              [%leaf p="~zod"]
                                                                                              [%leaf p="base"]
                                                                                              [%leaf p="~2022.1.6..14.22.14..40bf"]
                                                                                              ]
                                                                                              ]
                                                                                              > (smyt /as/les/top)
                                                                                              [ %rose
                                                                                              p=[p="/" q="/" r=""]
                                                                                              q=~[[%leaf p="as"] [%leaf p="les"] [%leaf p="top"]]
                                                                                              ]

                                                                                              ++spat

                                                                                              Render path as cord

                                                                                              Renders a path pax as cord.

                                                                                              Accepts

                                                                                              pax is a path.

                                                                                              Produces

                                                                                              A cord.

                                                                                              Source

                                                                                              ++ spat |=(pax=path (crip (spud pax)))

                                                                                              Examples

                                                                                              > (spat %)
                                                                                              '/~zod/base/~2022.1.6..14.23.31..e367'
                                                                                              > (spat %/lib)
                                                                                              '/~zod/base/~2022.1.6..14.23.43..829e/lib'
                                                                                              > (spat /as/les/top)
                                                                                              '/as/les/top'

                                                                                              ++spud

                                                                                              Render path as tape

                                                                                              Renders a path pax as tape.

                                                                                              Accepts

                                                                                              pax is a path.

                                                                                              Produces

                                                                                              A tape.

                                                                                              Source

                                                                                              ++ spud |=(pax=path ~(ram re (smyt pax)))

                                                                                              Examples

                                                                                              > (spud %)
                                                                                              "/~zod/base/~2022.1.6..14.24.35..cddf"
                                                                                              > (spud %/lib)
                                                                                              "/~zod/base/~2022.1.6..14.24.43..3efb/lib"
                                                                                              > (spud /as/les/top)
                                                                                              "/as/les/top"

                                                                                              ++stab

                                                                                              Parse cord to path

                                                                                              Parses a cord zep to a static path. Crashes if it fails to parse.

                                                                                              Accepts

                                                                                              zep is a @t.

                                                                                              Produces

                                                                                              A path, or crash.

                                                                                              Source

                                                                                              ++ stab |=(zep=@t `path`(rash zep stap))

                                                                                              Examples

                                                                                              > (stab '/as/lek/tor')
                                                                                              /as/lek/tor

                                                                                              ++stap

                                                                                              Path parser

                                                                                              Parsing rule. Parses a path, used internally by ++stab.

                                                                                              Source

                                                                                              ++ stap
                                                                                              %+ sear
                                                                                              |= p=path
                                                                                              ^- (unit path)
                                                                                              ?: ?=([~ ~] p) `~
                                                                                              ?. =(~ (rear p)) `p
                                                                                              ~
                                                                                              ;~(pfix fas (most fas urs:ab))

                                                                                              Examples

                                                                                              > (scan "/foo/bar/baz" stap)
                                                                                              /foo/bar/baz

                                                                                              <-

                                                                                              4l: Atom Parsing

                                                                                              4n: Virtualization

                                                                                              ->

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                                                                                              Last modified June 13, 2023