def differs

cswap-bend-cli@0.1.0.0 · store/plan.bend:206

import Base

206def differs(+m: Maybe<&2, String>, +num: String) -> Maybe<&2, String>:
207  match m:
208    case Some{old}:
209      sel.m(String.eq(old, num), None{}, Some{old})
210    case None{}:
211      None{}