Num.take.digits: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/num.bend as Num
Lines 116-121 of yaml-for-bend@0.1.1.0/num.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/num.bend&start_line=116&end_line=121

import Base

def take.digits(s: String) -> String:
  match s:
    case SNil{}:
      ""
    case SCon{+c, t}:
      when(String, Char.is_digit(c), u => SCon{c, take.digits(t)}, u => "")

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char.is_digit
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/num.bend&name=when