20 lines
543 B
Text
20 lines
543 B
Text
/-
|
||
Copyright (c) 2016 Microsoft Corporation. All rights reserved.
|
||
Released under Apache 2.0 license as described in the file LICENSE.
|
||
Author: Leonardo de Moura
|
||
-/
|
||
prelude
|
||
import init.category.monad init.category.alternative init.data.list.basic
|
||
import init.meta.mk_dec_eq_instance
|
||
open list
|
||
|
||
universes u v
|
||
|
||
instance : alternative list :=
|
||
⟨@map, @list.ret, @fapp _ _, @nil, @list.append⟩
|
||
|
||
instance {α : Type u} [decidable_eq α] : decidable_eq (list α) :=
|
||
by tactic.mk_dec_eq_instance
|
||
|
||
instance : decidable_eq string :=
|
||
list.decidable_eq
|