proposition: Lemma snd_nth_default_enumerate A ls start idx default : snd (nth_default default (@enumerate A ls start) idx) = nth_default (snd default) ls idx.
proof: Proof. rewrite !nth_default_eq; apply snd_nth_enumerate. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Coq.Lists.List Coq.Lists.SetoidList Coq.Bool.Bool Fiat.Common Fiat.Common.List.Operations Fiat.Common.Equality Fiat.Common.List.FlattenList Fiat.Common.LogicFacts