Re: [Haskell-beginners] Re: Problem with GHCI.

On Tue, Feb 23, 2010 at 8:39 PM, Chimpion Chimpion wrote:

Prelude> :d +Monad

<interactive>:1:22:     Couldn't match expected type `String -> IO String'            against inferred type `()'     In the expression: ()     In the expression: () :: String -> IO String     In the definition of `__cmCompileExpr':         __cmCompileExpr = () :: String -> IO String

That is the actual thing.

On 24 February 2010 00:05, Chimpion Chimpion wrote:

...

Could anyone tell me why this might be happening? I was trying to add some modules to the GHCi(:d +...).

    Couldn't match expected type `String -> IO String'            against inferred type `()'     In the expression: ()     In the expression: () :: String -> IO String     In the definition of `__cmCompileExpr':         __cmCompileExpr = () :: String -> IO String

Thank you.

Try :m +Control.Monad (if it is the same)