proposition: Lemma get_list_of_string str n : List.nth_error (list_of_string str) n = String.get n str.
proof: Proof. rewrite <- get_string_of_list, string_of_list_of_string; reflexivity. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Coq.Arith.PeanoNat Coq.Strings.Ascii Coq.Strings.String Fiat.Common.List.Operations Fiat.Common.StringOperations