-- Copyright (c) 2014 Microsoft Corporation. All rights reserved. -- Released under Apache 2.0 license as described in the file LICENSE. -- Author: Leonardo de Moura import bool using bool namespace string inductive char : Type := | ascii : bool → bool → bool → bool → bool → bool → bool → bool → char inductive string : Type := | empty : string | str : char → string → string theorem inhabited_char [instance] : inhabited char := inhabited_intro (ascii ff ff ff ff ff ff ff ff) theorem inhabited_string [instance] : inhabited string := inhabited_intro empty end