def num.signed

emerging-eztoml@0.9.0.0 · main.bend:1727

import Base

1727# a prefixed integer may not carry a sign
1728def num.signed(cs: List<&2, Char>) -> Bool:
1729  match cs:
1730    case []:
1731      False{}
1732    case +c <> _:
1733      Bool.or(Char.is_eq(c, '+'), Char.is_eq(c, '-'))