On Jun 23, 2009, at 11:37 AM, Kyle Schaffrick wrote:
> As an aside, I also notice you prefer 'reduce to 'apply when using > arithmetic functions, yet I've seen both in the wild. I'm just > guessing > you prefer to make it explicit that you're doing a reduction, but I > wonder if one is better than another? That's an interesting question. I just benchmarked 'em and found this: user> (time (reduce + (range 100000000))) "Elapsed time: 4724.192 msecs" 4999999950000000 user> (time (apply + (range 100000000))) "Elapsed time: 3018.139 msecs" 4999999950000000 I would have expected that 'apply would eventually blow up, because in Common Lisp there is a maximum number of arguments. My second intuition was that if '+/2 is inlined then the reduce should be faster, taking advantage of the inlined code. Both my intuitions were wrong and it looks like 'apply is notably faster. — Daniel Lyons --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
