f0f9880ece
new design for elim_match I still need to fix lemma generation, and refactor induction/subst tactics
19 lines
424 B
Text
19 lines
424 B
Text
set_option new_elaborator true
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inductive vec (A : Type) : nat → Type
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| nil {} : vec 0
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| cons : Π {n}, A → vec n → vec (n+1)
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open vec
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definition h {A : Type} : ∀ {n}, vec A (n+1) → A
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| n (cons a v) := a
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definition t {A : Type} : ∀ {n}, vec A (n+1) → vec A n
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| n (cons a v) := v
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example {A n} (a : A) (v : vec A n) : h (cons a v) = a :=
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rfl
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example {A n} (a : A) (v : vec A n) : t (cons a v) = v :=
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rfl
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