EmergingEztoml.when.feb: def of emerging-eztoml@0.9.0.0
Import: import emerging-eztoml@0.9.0.0/main.bend as EmergingEztoml
Lines 976-979 of emerging-eztoml@0.9.0.0/main.bend: https://jend.leeeet.dev/read.txt?path=emerging-eztoml@0.9.0.0/main.bend&start_line=976&end_line=979

import Base

# the days of February in a year
def when.feb(+yy: U32) -> U32:
  when.feb.go(U32.is_eq(U32.mod(yy, 4), 0), U32.is_eq(U32.mod(yy, 100), 0),
    U32.is_eq(U32.mod(yy, 400), 0))

Uses (4):
  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=emerging-eztoml@0.9.0.0/main.bend&name=when.feb.go