How to Check whether a file exists and IO[String] vs [String]

[Derek Elkins]

On Fri, 2 May 2003 23:06:36 +0200
"Alexandre Weffort Thenorio" <alethenorio@home.se> wrote:

> Hello. I am having two problems.

http://www.haskell.org/tutorial/io.html conveniently answers both.  Read
the rest of it too.