At work, we're primarily a Scala shop, but I've been writing some small Clojure utilities to handle quick tasks here and there (stuff I'd written in Python previously). I was hoping to make use of some of the Scala libraries we'd already written, but I ran into an Java/Scala interop problem that I couldn't solve cleanly.
The problem is with Scala's package objects. If you're not familiar with them, it's how Scala organizes top-level functions (ie, functions that do not belong to an object or class). It looks like Scala compiles package objects down to an object called "package". They are lexically distinguished from one another by the packages to which they belong. At the REPL, I was able to import one and call a method from it by doing: > (import '(org.fooinstitute.team.libary.foo package)) => org.fooinstitute.team.library.foo.package > (package/isFoo "foo") => true However, if I needed to use code from multiple Scala package objects, I couldn't import them all individually, because there would be a name conflict, and the last one imported would presumably shadow all the others. Alternatively, I could use the fully-qualified name for the package objects, like so: > (org.fooinstitute.team.library.foo.package/isFoo "foo") => true But that's kind of verbose. The only other solution I can think of is to write thin wrappers around the package objects I'd like to use, but as I understand it, the general Clojure philosophy eschews that practice, since Java interop should be fairly seamless (and is in just about every other case I've encountered so far). I think my preferred solution would be to allow imported Java classes to be aliased, so I could do this: > (import '(org.fooinstitute.team.library.foo package :as foop)) => org.fooinstitute.team.library.foo.package > (foop/isFoo "foop") => false But to the best of my knowledge (and searching), that doesn't exist in Clojure. Has anyone encountered this and found a satisfying solution? Thanks, Mark -- -- 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.
