2008/6/15 Magicloud Magiclouds <[EMAIL PROTECTED]>:
> Hello,
> I am getting familiar with FP now, and I have a "program design" kind of
> question.
> Say I have something like this in C:
> static int old;
> int diff (int now) { /* this would be called once a second */
> int ret = now - old;
> old = now;
> return ret;
> }
> Because there is no "variable" in Haskell. So how to do this in a FP
> way?
A better question would be to think about what you are trying to
accomplish, and then ask how to achieve that through functional
programming.
David
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
