Iso8601.Iso8601.dur.valid: def of bend-time-lib@0.4.0.1
Import: import bend-time-lib@0.4.0.1/iso8601.bend as Iso8601
Lines 286-293 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=286&end_line=293

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

def Iso8601.dur.valid(+st: Iso8601.DurS) -> Result<&2, &2, Iso8601.Error, Dur.Duration>:
  match st:
    case DurS{_, _, _, _, _, +saw_d, +saw_t, +saw_h, +saw_m, +saw_s}:
      Iso8601.dur.valid3(
        st,
        Iso8601.or4(saw_d, saw_h, saw_m, saw_s),
        Bool.or(Bool.not(saw_t), Iso8601.or3(saw_h, saw_m, saw_s))
      )

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  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.valid3
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&name=Iso8601.or3
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/iso8601.bend&name=Iso8601.or4