On May 11, 2011, at 1:20 PM, Armando Blancas wrote: > Have you seen this? > http://www.assembla.com/wiki/show/clojure/Enhanced_Primitive_Support >
Indeed, though that's old. See http://dev.clojure.org/display/doc/Enhanced+Primitive+Support instead. > I couldn't find a practical use of doing (defn ^String foo [] ...) > what's hinting the fn name good for? That's how one hints a non-primitive return type; that's been the case for a long time now. > You don't mention ^:static and that seems to be required for best > performance. > :static > •defn supports {:static true} metadata > •:static fns can take/return longs and doubles in addition to Objects > •compiler will compile static methods in addition to IFn virtual > methods ^:static has been a no-op for a while AFAIK, made unnecessary after changes to vars a while back. > The metadata isn't there, so I guess some symbol table is involved in > compiling static functions, not just the var. The compiler relies upon a stack of interfaces that define primitive-hinted function invocation: https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/IFn.java#L91 I haven't investigated the details sufficiently enough to comment beyond that. - Chas -- 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
