def some_nat

bendtorch-core@0.1.0.0 · src/shape/plan_proofs.bend:72

import Base

72def some_nat(-a: Nat, -b: Nat, equal: {a == b : Nat}) -> {Some{a} == Some{b} : Maybe<&2, Nat>}:
73  Equal.cong(Nat, Maybe<&2, Nat>, value => Some{value}, a, b, equal)