Date.Date.leap4: def of bend-time-lib@0.4.0.1
Import: import bend-time-lib@0.4.0.1/date.bend as Date
Lines 17-22 of bend-time-lib@0.4.0.1/date.bend: https://jend.leeeet.dev/read.txt?path=bend-time-lib@0.4.0.1/date.bend&start_line=17&end_line=22

import Base

def Date.leap4(+y: U32, d4: Bool) -> Bool:
  match d4:
    case False{}:
      False{}
    case True{}:
      Date.leap100(y, U32.is_eq(U32.mod(y, 100), 0))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mod
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/date.bend&name=Date.leap100