24 lines
732 B
Text
24 lines
732 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.meta.mk_dec_eq_instance init.subtype init.meta.occurrences init.sum
|
|
open tactic subtype
|
|
universe variables u v
|
|
|
|
instance {A : Type u} {p : A → Prop} [decidable_eq A] : decidable_eq {x : A // p x} :=
|
|
by mk_dec_eq_instance
|
|
|
|
instance {A : Type u} [decidable_eq A] : decidable_eq (list A) :=
|
|
by mk_dec_eq_instance
|
|
|
|
instance : decidable_eq occurrences :=
|
|
by mk_dec_eq_instance
|
|
|
|
instance : decidable_eq unit :=
|
|
by mk_dec_eq_instance
|
|
|
|
instance {A : Type u} {B : Type v} [decidable_eq A] [decidable_eq B] : decidable_eq (A ⊕ B) :=
|
|
by mk_dec_eq_instance
|