87932f1c56
The following are accepted .(t) ._ We don't accept .t anymore because it will conflict with the field access notation.
17 lines
450 B
Text
17 lines
450 B
Text
open nat
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inductive bv : nat → Type
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| nil : bv 0
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| cons : ∀ (n) (hd : bool) (tl : bv n), bv (succ n)
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open bv bool
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definition h : ∀ {n}, bv (succ (succ n)) → bool
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| .(succ m) (cons (succ (succ m)) b v) := b
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| .(0) (cons (succ nat.zero) b v) := bnot b
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example (m : nat) (b : bool) (v : bv (succ (succ m))) : @h (succ m) (cons (succ (succ m)) b v) = b :=
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rfl
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example (m : nat) (b : bool) (v : bv 1) : @h 0 (cons 1 b v) = bnot b :=
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rfl
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