mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-19 09:12:34 +03:00
135 lines
2.5 KiB
Idris
135 lines
2.5 KiB
Idris
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--------------------------------------------------------------------------------
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-- data (this worked before)
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fd : Int
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fd = 5 where
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data X : Type where
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MkX : Int -> X
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gd : Int
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gd = 5 where
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data X : Type where
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MkX : Int -> X
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--------------------------------------------------------------------------------
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-- record without fields or constructor
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fr0 : Int
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fr0 = 5 where
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record X where
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gr0 : Int
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gr0 = 5 where
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record X where
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--------------------------------------------------------------------------------
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-- record without fields but with constructor
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fr1 : Int
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fr1 = 5 where
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record X where
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constructor MkX
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gr1 : Int
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gr1 = 5 where
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record X where
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constructor MkX
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--------------------------------------------------------------------------------
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-- record with a field and constructor
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fr2 : Int
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fr2 = 5 where
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record X where
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constructor MkX
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field1 : Int
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gr2 : Int
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gr2 = 5 where
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record X where
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constructor MkX
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field1 : Int
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--------------------------------------------------------------------------------
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-- record with two fields and constructor
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fr3 : Int
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fr3 = 5 where
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record X where
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constructor MkX
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field1 : Int
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field2 : Bool
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gr3 : Int
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gr3 = 5 where
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record X where
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constructor MkX
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field1 : Char
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field2 : String
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--------------------------------------------------------------------------------
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-- record with parameter
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fr4 : Int
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fr4 = 5 where
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record X (a : Type) where
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constructor MkX
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field1 : Int
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field2 : a
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gr4 : Int
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gr4 = 5 where
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record X (a : Type) where
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constructor MkX
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field1 : a
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field2 : String
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--------------------------------------------------------------------------------
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-- complex example
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fr5 : List Int
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fr5 = fun k where
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k : Int
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k = 5
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record X (a : Type) where
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constructor MkX
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xfield1 : Int
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xfield2 : (X a -> Int)
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xfield3 : a
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rec : X Int
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rec = MkX (k+1) (const (k+2)) 3
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fun : Int -> List Int
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fun n = n :: rec.xfield1 :: rec.xfield2 rec :: rec.xfield3 :: []
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gr5 : List Int
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gr5 = fun k where
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k : Int
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k = 6
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record X (a : Type) where
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constructor MkX
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xfield1 : Int
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xfield2 : (X a -> Int)
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xfield3 : a
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rec : X Int
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rec = MkX (k+3) (const (k+4)) 5
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fun : Int -> List Int
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fun n = n :: rec.xfield1 :: rec.xfield2 rec :: rec.xfield3 :: []
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--------------------------------------------------------------------------------
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main : IO ()
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main = do
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printLn $ fr5
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printLn $ gr5
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--------------------------------------------------------------------------------
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