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19 lines
446 B
Plaintext
19 lines
446 B
Plaintext
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data Nat : Type where
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Z : Nat
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S : Nat -> Nat
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plus : Nat -> Nat -> Nat
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plus Z $y = y
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plus (S $k) $y = S (plus k y)
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data Baz : Nat -> Type where
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AddThings : (x : Nat) -> (y : Nat) -> Baz (plus x y)
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addBaz : (x : Nat) -> Baz x -> Nat
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addBaz (plus $x $y) (AddThings $x $y) = plus x y
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-- Can't unify because we can't infer the arguments to 'plus'
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addBaz4 : (x : Nat) -> Baz x -> Nat
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addBaz4 (plus _ _) (AddThings $x $y) = plus x y
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