how to read a file's content to a string?

[Jay Cox]

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
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> Haskell@haskell.org
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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