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33 lines
626 B
Idris
33 lines
626 B
Idris
||| Test extended record syntax
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data NotZero : Nat -> Type where
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Is : {n : Nat} -> NotZero (S n)
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record Positive (n : Nat) {auto 0 pos : NotZero n} where
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constructor Check
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a : Positive 1
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a = Check
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b : Positive 2
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b = Check
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{- Will not type-check
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c : Positive 0
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-}
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data KindOfString = ASCII | UTF
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UTForASCII : KindOfString -> Type
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UTForASCII UTF = String
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UTForASCII ASCII = List Char --- Just to demonstrate
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record FlexiString { default UTF k : KindOfString} where
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constructor MkFlexiString
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val : UTForASCII k
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c : FlexiString
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c = MkFlexiString "hello"
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d : FlexiString {k = ASCII}
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d = MkFlexiString ['h', 'i']
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