Input.decimal.step: def of bend-kit-camber@0.15.0.1
Import: import bend-kit-camber@0.15.0.1/input.bend as Input
Lines 16-19 of bend-kit-camber@0.15.0.1/input.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-camber@0.15.0.1/input.bend&start_line=16&end_line=19

import Base

def decimal.step(ok: Bool, +acc: U32, digit: U32, next: U32 -> Maybe<&2, U32>) -> Maybe<&2, U32>:
  match ok:
    case False{}: None{}
    case True{}: next((acc * 10 + digit : U32))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul