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https://github.com/edwinb/Idris2-boot.git
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39 lines
873 B
Idris
39 lines
873 B
Idris
data Vect : Nat -> Type -> Type where
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Nil : Vect Z a
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(::) : a -> Vect k a -> Vect (S k) a
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record MyDPair a p where
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constructor MkMyDPair
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dfst : a
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dsnd : p dfst
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cons : t -> MyDPair Nat (\n => Vect n t) -> MyDPair Nat (\n => Vect n t)
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cons val xs
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= record { dfst = S (dfst xs),
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dsnd = val :: dsnd xs } xs
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cons' : t -> MyDPair Nat (\n => Vect n t) -> MyDPair Nat (\n => Vect n t)
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cons' val
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= record { dfst $= S,
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dsnd $= (val ::) }
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record Stats where
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constructor MkStats
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height : Int
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weight : Int
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record Person where
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constructor MkPerson
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name : String
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age, shoesize : Int
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more : Stats
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testPair : MyDPair Nat (\n => Vect n Int)
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testPair = MkMyDPair _ [1,2,3,4,5]
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testPerson : Person
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testPerson = MkPerson "Fred" 1337 10 (MkStats 10 10)
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grow : Person -> Person
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grow = record { more->height $= (+1) }
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