Sse.digits: def of bend-kit-llm@0.13.0.1
Import: import bend-kit-llm@0.13.0.1/sse.bend as Sse
Lines 74-80 of bend-kit-llm@0.13.0.1/sse.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-llm@0.13.0.1/sse.bend&start_line=74&end_line=80

import Base

# Base-ten digits, at most 9 of them; None for any other text.
def digits(s: String, +acc: U32, +n: U32, bad: Bool) -> Maybe<&2, U32>:
  match s:
    case SNil{}:
      Bool.pick(Maybe<&2, U32>, Bool.or(bad, Bool.or(U32.is_zero(n), U32.is_lt(9, n))), None{}, Some{acc})
    case SCon{Chr{+c}, t}:
      digits(t, (acc * 10 + (c - 48 : U32) : U32), (n + 1 : U32), Bool.or(bad, Bool.or(U32.is_lt(c, 48), U32.is_lt(57, c))))

Uses (12):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  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=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.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_zero
  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