def head.of

cswap-bend-cli@0.1.0.0 · policy/usage.bend:93

import Base
import cswap-bend-cli@0.1.0.0/policy/types.bend as T

93def head.of(+m: Maybe<&2, Nat>) -> Maybe<&2, Nat>:
94  match m:
95    case None{}:
96      None{}
97    case Some{p}:
98      Some{Nat.sub(T.full(), p)}