jerzy.karczmarczuk@info.unicaen.fr wrote:
Niko Korhonen writes: ...
Although it could be argued that laziness is the cause of some very obscure bugs... <g> Niko
Example, PLEASE. Jerzy Karczmarczuk
Write any piece of code that processes data from hard disk in a non-trivial manner, uses buffering with IOUArray or does pretty much anything IO heavy. You're bound to hit into a few laziness-related stack/heap overflows before you get it right. Sometimes finding the space leak can be really, really hard and causes the amount of strictness annotations in your code to explode. Hence the notion that the art of optimizing Haskell programs is akin to black magic and is fully understood only by a handful of some of the best minds in the universe. For some concrete examples see my posts on randomR and IOUArray on this newsgroup. Niko