> It's definitely not necessary to implement the bulk of your code in Java to > get performance. On the other hand, getting performance out of Clojure can > be tricky.
Well, yeah, that's the thing- getting maximal performance out of clojure seems to require a degree of expertise and patience that I certainly don't possess and that seemingly few, in practice, do: I tend to be skeptical of claims that clojure can *always* be made to run as fast as equivalent java code when much more proficient programmers than myself struggle to get 1/6th of equivalent speed... http://gnuvince.wordpress.com/2009/05/11/clojure-performance-tips/ ...1/6th native speed is fine for my present purposes, but I don't want to rewrite my vertex/normal transforms or A* pathfinding in clojure unless and until I'm a lot more confident of my ability to tease out performance. > NetBeans, which I use, does better at this. You have to restart the REPL > after any change to Java classes, which is a nuisance, but you don't have to > restart the IDE or muck with anything else (project libraries, classpath). > Even if you have separate projects and some are dependencies of others, and > all are undergoing active development, you just have to reboot the REPL > after changing Java code. Changing Clojure code, even in a separate project > that's a dependency of your main project, can typically be handled with a > load-file of the changed file. Only if your refactoring moves a Clojure > function or other object from one namespace to another (same or different > project) do you generally have to restart the REPL, since it won't let you > intern a name in a package that imports the same name from another one, and > uninterned symbols won't go away. It's a good idea to occasionally restart > your REPL anyway to clear out cruft and avoid having a running image that's > become dependent on something that isn't in your code base, and also to find > anywhere where you are missing forward-declarations. I actually couldn't get the Netbeans plugin REPL to run at all, but that was a couple of months back... I might try again with the (more recent?) version. That does sound like a very handy dev system. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
