On Sat, 29 Jun 2002, Jon Fairbairn wrote:
Shlomi Fish wrote:
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].
What do you mean by "determine"?
_I_ want to determine which step to go to next. I'd like to pass a parameter the counter each time, and each time get the next number as well as a new counter. Regards, Shlomi Fish
You can write
sequence = iterate step_counter 0
if the interval between successive numbers is determined by the current number, or
sequence = map f [1..]
if it's determined by the index in the sequence.
or
sequence = map snd $ iterate step_counter (0,-7) step_counter (a,b) = (a+1, f a b)
if it depends on both.
J�n
---------------------------------------------------------------------- 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.