[Haskell-cafe] how to get a string from file

[Thomas DuBuisson]

On Wed, Mar 3, 2010 at 10:26 AM, Pradeep Wickramanayake <pradeep at talk.lk> wrote:
> getItemFile :: IO String

This says getItemFile is an action that returns a string.  No arguments.

> getItemFile test = ...

And your implementation obviously requires a file path as an argument.
 You wanted a type signature of:

getItemFile :: FilePath -> IO String

or perhaps more simply (FilePath is just an alias for String):

getItemFile :: String -> IO String

Cheers,
Thomas