On Sat, 29 Jun 2002, Hannah Schroeter wrote:
Hello!
On Sat, Jun 29, 2002 at 06:23:27PM +0300, Shlomi Fish wrote:
[...]
Actually, I'd like a more generalized counter. Something that would return both the number and a handler to add another number, which in turn would return the new sum and a new handler, etc.
That's just what lazy lists are for. The "handler" thing is done automatically thanks to lazy evaluation.
I.e. countFrom n = n : countFrom (n + 1) or just countFrom n = [n..]
No. But I want to generate an irregular series, which I determine the intervals between two consecutive numbers myself. E.g: let (num1, next1) = (counter 5) (num2, next2) = (next1 100) (num3, next3) = (next2 50) in [num1,num2,num3] Will have the numbers [5, 105, 155]. Regards, Shlomi Fish
Kind regards,
Hannah. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
---------------------------------------------------------------------- Shlomi Fish shlomif@vipe.technion.ac.il Home Page: http://t2.technion.ac.il/~shlomif/ Home E-mail: shlomif@iglu.org.il He who re-invents the wheel, understands much better how a wheel works.