Interesting - there seems to be a very slight performance advantage to your version on my machine (consistently about 25% faster for if-nots in a tight loop).
I think the problem is actually with "not" - which isn't getting inlined currently. If I patch not so that it is inlined, the difference disappears. Worth a quick patch maybe? On Thursday, 22 January 2015 03:51:37 UTC+8, Leon Grapenthin wrote: > > I am surprised to find the two branch implementation of if-not as follows: > > > ([test then else] > `(if (not ~test) ~then ~else)) > > > What I expected was: > > > ([test then else] > `(if ~test ~else ~then)) > > -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.