lean2/library/standard/string.lean
Leonardo de Moura 105c29b51e refactor(library/standard): use new coding style, rename bool.b0 and bool.b1 to bool.ff and bool.tt
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-28 19:59:38 -07:00

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-- 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