On Tue, 5 Mar 2002, Zhe Fu wrote:

I want to read a file's content into a string.

content :: FilePath -> String content f = readFile f

But when there is a type error:

Type error in explicitly typed binding *** Term : content *** Type : FilePath -> IO String *** Does not match : FilePath -> String

How can I solve it?

Thanks.

Zhe _______________________________________________ Haskell mailing list Haskell@haskell.org http://www.haskell.org/mailman/listinfo/haskell

Essentially, what you are trying to do is invalid. you have to write some function that results in a IO String. I haven't read these but they might help. (cut and paste from haskell wiki front page) ThatAnnoyingIoType: I have an IO String but I need a String - what do I do now? http://haskell.org/wiki/wiki?ThatAnnoyingIoType UsingIo: What's that IO type anyway? How do I do I/O in Haskell? http://haskell.org/wiki/wiki?UsingIo Jay Cox