So, is this a correct summary of the problem? "Importing a class in clojure causes static initializers to run. This differs from Java where static initializers don't run until the first 'initialization' (either the invocation of a constructor, or invocation of a 'main' method) of a class. In some cases, this makes it impossible to create the environment that java classes expect to be present before they are initialized."
On Tuesday, October 22, 2013, Zach Oakes wrote: > Here's the error I get when I import LibGDX's Timer class: > > http://pastebin.com/q7wys8yi > > On Tuesday, October 22, 2013 9:55:16 PM UTC-4, Alex Miller wrote: >> >> I'd love to see a stack trace when that happens (could even be triggered >> by dumping stack in your static initializer if nothing else). >> >> On Saturday, October 12, 2013 3:17:50 AM UTC-5, Wujek Srujek wrote: >>> >>> So you are saying compilation is trying to instantiate class and run >>> static initializers? This seems very backward, are you sure? >>> >>> >>> On Sat, Oct 12, 2013 at 8:30 AM, Zach Oakes <zso...@gmail.com> wrote: >>> >>>> I should add, I am aware I can bring in a class dynamically with >>>> Class/forName, and that is what I ended up doing for the Timer class. >>>> However, this is not always practical, and sometimes is simply not an >>>> option if aot-compilation is required. >>>> >>>> >>>> On Saturday, October 12, 2013 2:28:38 AM UTC-4, Zach Oakes wrote: >>>>> >>>>> I recently learned that merely importing a Java class in Clojure >>>>> causes static initializers to be run. Sometimes, this causes compilation >>>>> errors, because they are written with the assumption that they will only >>>>> be >>>>> run during runtime. >>>>> >>>>> I ran into this just now while trying to make a simple Clojure game >>>>> with LibGDX. After simply importing its Timer class, I began getting >>>>> compilation errors. The stack trace shows it is due to a static >>>>> initializer<https://github.com/libgdx/libgdx/blob/511b557c1a2d23bf8110a05b0ef54cc20b7f958d/gdx/src/com/badlogic/gdx/utils/Timer.java#L32>attempting >>>>> to instantiate the class! >>>>> >>>>> I also ran into this recently while trying to use RoboVM. My question >>>>> is, do I have any options? I haven't found many discussions about this >>>>> here >>>>> or elsewhere. This surprises me, because it seems like something more >>>>> people should be running into. >>>>> >>>> -- -- 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.
