proposition: Fact rmatch {A} f g m : rspec (A:=A) f g m (rcase f g m).
proof: Proof. unfold rcase. destmatch; now constructor. Qed.
imports: Coq(Bool BinPos Pnat Setoid SetoidList PeanoNat) Coq(Orders OrdersFacts OrdersLists) MMaps(Utils Interface OrdList GenTree)