John Wicket wrote:
I am still in an imperative way of thinking. In this example here; how would I call "putStrLn" and then set the function with a value. Eg:aa :: String -> IO () aa instr = do putStrLn "abc" putStrLn "abc" return "123" --- The error I am getting. Couldn't match expected type `()' against inferred type `[Char]' In the first argument of `return', namely `"123"' In the expression: return "123" In the expression: do putStrLn "abc" putStrLn "abc" return "123"
Your type signature is wrong. If you want an IO action whose return value is a String, say so:
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