Cli.decimal_digits: def of cli@0.2.0.0
Import: import cli@0.2.0.0/cli.bend as Cli
Lines 1923-1928 of cli@0.2.0.0/cli.bend: https://jend.leeeet.dev/read.txt?path=cli@0.2.0.0/cli.bend&start_line=1923&end_line=1928

import Base

# Decimal digits by Nat.read's own test, which Char.is_digit agrees with.
def decimal_digits(s: String) -> Bool:
  match s:
    case SNil{}: True{}
    case SCon{Chr{x}, tail}:
      Bool.and(U32.is_lt(U32.sub(x, 48), 10), decimal_digits(tail))

Uses (6):
  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=String
  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.sub