On Sun, May 29, 2011 at 9:17 AM, bOR_ <boris.sch...@gmail.com> wrote:
> Is there something obvious I am missing when aset in clojure 1.3-alpha8 > won't work for shorts. aset-shorts does work, but way slower than I'd > expect. There is also an order of magnitude difference in speed between aset > ^ints and aset-int. > > I've looked at the source of amap (which was the first thing to give me > problems with shorts), and from there came to writing the expanded amap > macro out, and using aset-shorts rather than aset to get shorts working. I'm > however stuck at looking at the source of aset and understanding how I can > make that work with shorts. > > Related (now that I have the floor anyway), should I still be messing with > java arrays in clojure 1.3, or would a vector of primitives be as fast? > aset-xxxx usage is not correct. Always use aset. (let [^shorts as (make-array Short/TYPE 10)] (aset as 0 (short 1))) Works fine. Proper use of Java arrays is idiomatic for the forseeable future as far as I can tell. Vectors of primitives are more efficient, but there's work to be done for them to approach Java arrays in perf. David -- 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
