[Haskell-cafe] Lazy Lists and IO
derek.a.elkins at gmail.com
Wed Jul 11 19:27:47 EDT 2007
On Wed, 2007-07-11 at 22:33 +0200, Chaddaï Fouché wrote:
> 2007/7/11, Andrew Coppin <andrewcoppin at btinternet.com>:
> > Ouch! That's gotta sting...
> > I wasn't aware that this function was so leathal. I use it constantly
> > all the time...
> It isn't that "lethal" usually. It's only because he was using it on
> an infinite stream that it hurt so much... If you use it on a normal
> stdin or a hGetContents on a file it will be fine (though you will
> lose the advantage of its laziness, for example constant memory
Nevertheless, length is a function you should rarely use.
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