Date.Date.is_30: def of bend-time-lib@0.4.0.1
Import: import bend-time-lib@0.4.0.1/date.bend as Date
Lines 52-56 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=52&end_line=56

import Base

def Date.is_30(+m: U32) -> Bool:
  Bool.or(
    U32.is_eq(m, 4),
    Bool.or(U32.is_eq(m, 6), Bool.or(U32.is_eq(m, 9), U32.is_eq(m, 11)))
  )

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  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