def Iso8601.dur.frac.s
import bend-time-lib@0.4.0.1/iso8601.bend as Iso8601import Base
477def Iso8601.dur.frac.s(
478 st: Iso8601.DurS, sec: U32, acc: U32, +left: Nat, is_s: Bool
479) -> Iso8601.DurC:
480 match is_s:
481 case True{}:
482 Iso8601.dur.frac.s2(st, sec, acc, left, Nat.is_eq(left, 9n))
483 case False{}:
484 DurFail{Invalid{}}