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      • 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

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

          • Limbs
          • Wings
          • Zuse

            • Table of Contents
            • 2d(1-5): To JSON, Wains
            • 2d(6): From JSON
            • 2d(7): From JSON (unit)
            • 2e(2-3): Print & Parse JSON
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                                              Urbit Developers
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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

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

                                                      • Limbs
                                                      • Wings
                                                      • Zuse

                                                        • Table of Contents
                                                        • 2d(1-5): To JSON, Wains
                                                        • 2d(6): From JSON
                                                        • 2d(7): From JSON (unit)
                                                        • 2e(2-3): Print & Parse JSON
                                                      • Arvo

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                                                          • Cryptography
                                                          • API Reference
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                                                          • Data Types
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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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