Time.digits.go: def of bend-kit-time@0.3.0.0
Import: import bend-kit-time@0.3.0.0/time.bend as Time
Lines 390-403 of bend-kit-time@0.3.0.0/time.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-time@0.3.0.0/time.bend&start_line=390&end_line=403

import Base

def digits.go(n: Nat, s: String, +acc: U32, ok: Bool) -> Maybe<&1, U32 & String>:
  match n:
    case 0n:
      match ok:
        case True{}:
          Some{(acc, s)}
        case False{}:
          None{}
    case 1n+k:
      match s:
        case SNil{}:
          None{}
        case SCon{Chr{+c}, t}:
          digits.go(k, t, (acc * 10 + c - 48 : U32), Bool.and(ok, is_digit(c)))

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  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=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  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
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=bend-kit-time@0.3.0.0/time.bend&name=is_digit