def lstart_fields

cswap-bend-cli@0.1.0.0 · daemon/sess.bend:153

import Base

153def lstart_fields(+m: Maybe<&2, U32>, +d: Maybe<&2, U32>, +c: Maybe<&2, U32>, +y: Maybe<&2, U32>) -> Maybe<&2, U32>:
154  match m d c y:
155    case Some{mm} Some{dd} Some{cc} Some{yy}:
156      lstart_ok(U32.is_ge(yy, 1970), yy, mm, dd, cc)
157    case _ _ _ _:
158      None{}