Hi I have some programs, which runs slow even with optimalization on. I want ask, if there are some good texts about how write fast code? For example I need to know, if is faster to use recursive functions or if I should rewrite this recursive code to loops? (I THINK, that loops will faster, but It will take big deal of time to rewrite code to see if I was right and I would like to find some good tricks) My code is more about working with data than some computations. I look to google and find bout 250 000 references, but It is too much and I am also not sure if I can trust all of them. -- Jan Kastil galloth@xxxxxxxxx