12 lines
302 B
Text
12 lines
302 B
Text
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inductive vec (A : Type) : nat → Type
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| nil {} : vec nat.zero
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| cons : ∀ {n}, A → vec n → vec (nat.succ n)
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open vec
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definition boo (n : nat) (v : vec bool n) : vec bool n :=
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match n, v : ∀ (n : _), vec bool n → _ with
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| 0, nil := nil
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| n+1, cons a v := cons (bool.bnot a) v
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end
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