def Date.previous_weekday
import bend-time-lib@0.4.0.1/date.bend as Dateimport Base
432def Date.previous_weekday(
433 +d: Date, w: Weekday
434) -> Result<&2, &2, Date.Error, Date>:
435 Date.sub_days(
436 d, Weekday.fwd(Weekday.to_u32(w), Weekday.to_u32(Date.weekday(d)))
437 )