You could try this:
--OpenFile.hs
module OpenFile where
import IOExts
openfile :: String -> String
openfile = unsafePerformIO . readFile
-- end of file
> -----Original Message-----
> From: Hamilton Richards [mailto:[EMAIL PROTECTED]]
> Sent: 26 April 2000 14:04
> To: [EMAIL PROTECTED]
> Subject: openfile :: String -> String
>
>
> The Gofer prelude had a function
>
> openfile :: String -> String
>
> which mapped file path names to strings containing the named
> files' contents.
>
> The Hugs98 Prelude doesn't seem to have anything like that function.
> Instead, it has things like
>
> readFile :: String -> IO String
>
> Why would I want openfile instead of readFile? The problem in
> which the
> need for openfile arose is this:
>
> I want to load a binary search tree and a list with
> words read from a file, and then perform, interactively,
> several tests comparing the cost of searching the
> tree with that of searching the list. In addition to
> performing the tests interactively, I want to separate
> the cost of searching the list and the tree from the
> cost of constructing them.
>
> In order for the list and the tree to be used in several successive
> command-line evaluations without being reconstructed each
> time, they must
> be named globally. This is no problem with openfile, but
> readFile forces
> their names to be local to an IO command.
>
> Can anyone suggest a solution?
>
> Thanks,
>
> --Ham
>
>
>
> ------------------------------------------------------------------
> Hamilton Richards Jr. Department of Computer Sciences
> Senior Lecturer Mail Code C0500
> 512-471-9525 The University of Texas at Austin
> SHC 434 Austin, Texas 78712-1188
> [EMAIL PROTECTED]
> ------------------------------------------------------------------
>
>
>
