def merge.at

cswap-bend-cli@0.1.0.0 · policy/safe.bend:133

import Base

133def merge.at(+tail_first: Bool, +c: Cd, +d: Cd) -> Maybe<&2, Cd>:
134  match tail_first:
135    case True{}:
136      Some{d}
137    case False{}:
138      Some{c}