Iso8601.Iso8601.dur.valid3: def of bend-time-lib@0.4.0.1
Import: import bend-time-lib@0.4.0.1/iso8601.bend as Iso8601
Lines 274-285 of bend-time-lib@0.4.0.1/iso8601.bend: https://jend.leeeet.dev/read.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&start_line=274&end_line=285

import Base
import bend-time-lib@0.4.0.1/duration.bend as Dur

def Iso8601.dur.valid3(
  st: Iso8601.DurS, has: Bool, tok: Bool
) -> Result<&2, &2, Iso8601.Error, Dur.Duration>:
  match has:
    case False{}:
      Fail{Invalid{}}
    case True{}:
      match tok:
        case False{}:
          Fail{Invalid{}}
        case True{}:
          Iso8601.dur.mk(st)

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/duration.bend&name=Duration
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&name=Iso8601.DurS
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&name=Iso8601.Error
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&name=Iso8601.dur.mk