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16 lines
395 B
Idris
16 lines
395 B
Idris
data MyNat : Type where
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MyZ : MyNat
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MyS : (1 _ : MyNat) -> MyNat
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lplus : (1 x : MyNat) -> (1 y : MyNat) -> MyNat
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lplus MyZ y = y
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lplus (MyS k) y = MyS (lplus k y)
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foo : (1 x : MyNat) -> (1 y : MyNat) -> MyNat -> MyNat
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foo x y z
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= let 1 test = the MyNat $ case z of
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MyZ => MyZ
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(MyS k) => MyS z
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in
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lplus test x
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