(** * Coq codes *)
(** ** Dependencies *)
Require Export Ascii.
Require Export String.
Require Export List.
Require Export Relation_Definitions.
(** ** Equality and equivalence *)
Definition bool_eq (a a':bool) : Prop := a = a'.

Lemma ascii_eq_equiv : equiv ascii ascii_eq.
Definition string_eq (a a':string) : Prop := a = a'.