34 lines
933 B
Text
34 lines
933 B
Text
open tactic
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namespace test
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inductive enum1 : Type | ea | eb | ec | ed
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instance enum1_dec_eq : decidable_eq enum1 :=
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by mk_dec_eq_instance
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inductive Expr
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| var : nat → Expr
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| app : ∀ (n : nat) (e1 : Expr) (e2 : Expr) (e3 : Expr) (e4 : Expr), Expr
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| Elet : Expr → Expr
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| bla : list nat → Expr
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instance Expr_has_dec_eq : decidable_eq Expr :=
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by mk_dec_eq_instance
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universe variables u v
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def prod_decidable {A : Type u} {B : Type v} [decidable_eq A] [decidable_eq B] : decidable_eq (A × B) :=
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by mk_dec_eq_instance
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def sum_decidable {A : Type u} {B : Type v} [decidable_eq A] [decidable_eq B] : decidable_eq (sum A B) :=
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by mk_dec_eq_instance
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def nat_decidable : decidable_eq nat :=
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by mk_dec_eq_instance
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def list_decidable {A : Type u} [decidable_eq A] : decidable_eq (list A) :=
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by mk_dec_eq_instance
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def option_decidable {A : Type v} [decidable_eq A] : decidable_eq (option A) :=
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by mk_dec_eq_instance
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end test
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