proposition: Lemma paren_balanced_hiding'_nil (str : String) (H : length str = 0) : paren_balanced_hiding' str = Compare_dec.zerop.
proof: Proof. apply fold_nil; assumption. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.ZArith.ZArith Fiat.Parsers.Reachable.ParenBalanced.Core Fiat.Parsers.StringLike.Core Fiat.Parsers.StringLike.Properties Fiat.Common