Usage.head.of: def of cswap-bend-cli@0.1.0.0
Import: import cswap-bend-cli@0.1.0.0/policy/usage.bend as Usage
Lines 93-98 of cswap-bend-cli@0.1.0.0/policy/usage.bend: https://jend.leeeet.dev/read.txt?path=cswap-bend-cli@0.1.0.0/policy/usage.bend&start_line=93&end_line=98

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

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

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=cswap-bend-cli@0.1.0.0/policy/types.bend&name=full