Cli.columns_valid: def of cli@0.2.0.0
Import: import cli@0.2.0.0/cli.bend as Cli
Lines 7811-7814 of cli@0.2.0.0/cli.bend: https://jend.leeeet.dev/read.txt?path=cli@0.2.0.0/cli.bend&start_line=7811&end_line=7814

import Base

def columns_valid(ok: Bool, value: String) -> Maybe<&2, Nat>:
  match ok:
    case True{}: Some{nat_of(value)}
    case False{}: None{}

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=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=cli@0.2.0.0/cli.bend&name=nat_of