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21 lines
525 B
Idris
21 lines
525 B
Idris
data MyCmd : Type -> Type where
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Display : String -> MyCmd ()
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Input : MyCmd String
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Pure : ty -> MyCmd ty
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(>>=) : MyCmd a -> (a -> MyCmd b) -> MyCmd b
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runMyCmd : MyCmd a -> IO a
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runMyCmd (Display str) = putStrLn str
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runMyCmd Input = do str <- getLine
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pure str
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runMyCmd (Pure x) = pure x
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runMyCmd (c >>= f) = do res <- runMyCmd c
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runMyCmd (f res)
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myCmdTest : MyCmd ()
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myCmdTest = do Display "Hello"
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x <- Input
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Display x
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Pure ()
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