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