Defs.dec.push: def of lawful-fields@0.1.1.0
Import: import lawful-fields@0.1.1.0/defs.bend as Defs
Lines 43-48 of lawful-fields@0.1.1.0/defs.bend: https://jend.leeeet.dev/read.txt?path=lawful-fields@0.1.1.0/defs.bend&start_line=43&end_line=48

import Base

def dec.push(acc: Maybe<&2, Nat>, d: Maybe<&2, Nat>) -> Maybe<&2, Nat>:
  match acc d:
    case Some{a} Some{k}:
      Some{Nat.add(Nat.mul(a, 10n), k)}
    case _ _:
      None{}

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.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul