Re: re-opening a closed stdin?

On Mon, Nov 25, 2002 at 11:22:56AM -0500, Dean Herington wrote:

Is even the following example from the library report (section 11.8.2) problematic?

import System import Char( toUpper )

main = do [f1,f2] <- getArgs s <- readFile f1 writeFile f2 (map toUpper s)

yes, if f1 == f2. Lots of puzzled students resulting... :) Cheers, M/