Folks, I've been doing Clojure coding for the last couple of weeks and really love the language... and the community is fantastic.
But the development cycle is slow. I'm coming from mostly Scala and a little Java. In Java, there's no REPL or anything... but the compile/test cycle is very fast. So, I can make a few changes to code, type "mvn test" and see the results typically in less than 2 seconds (my MacBook Pro and my Linux desktop). In Scala, the compile cycles are slower than in Java because the Scala compiler is doing a whole ton more. But in sbt (Simple [ha ha] Built Tool), one is always building/testing in the same JVM instance so the JVM is warmed up. A "change code and run tests" cycle is typically as fast as it is in Java. For example, Changing something significant in the net.liftweb.util package and doing a recompile and test takes about 9 seconds. This is running > 450 tests. My Clojure development cycle is much slower. On my MacBook Pro (3rd gen i7 quadcore processor, 16GB of ram), each time I make a change and re-run the test for Plugh ( https://github.com/projectplugh/plugh ) it takes about 20 second and there are only 4 tests. On my desktop Linux box (i7-3770 with 32gb of RAM) it takes about 4 seconds to run the 4 tests. I also ran stuff on a very old ThinkPad (core 2 duo with 4GB ram running Linux Mint 15) and the test cycle takes 12 second. So... the questions: * Is there a faster cycle than to change code, change tests and type "lein test" to see the results? * Is there a way to keep everything in a hot JVM (I've done a little research on Nailgun... but it seems to be out of vogue) so there's no JVM start-up penalty? * Is there a reason for the huge disparity between my MacBook Pro and my desktop box? Thanks, David -- Telegram, Simply Beautiful CMS https://telegr.am Lift, the simply functional web framework http://liftweb.net Follow me: http://twitter.com/dpp Blog: http://goodstuff.im -- -- 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/groups/opt_out.
