On Mon, May 21, 2012 at 1:12 PM, nicolas.o...@gmail.com < nicolas.o...@gmail.com> wrote:
> > Same here--I can count on one hand the number of times I've wanted to > > implement polymorphism in three and a half years. Every time > > multimethods have worked great for the task. If you had polymorphism > > in a tight loop they might not suffice, but the decision to abandon > > multimethods should only be made after thorough benchmarking. > > The point is not whether deftype is useful or not. It is in the > language so it must be useful, even it it is rarely. > The point is whether it is an expressive construct or not. > And it is not expressive enough to my taste. Why not build a trait system then if you want something more "expressive"? All the pieces are there. Basic benchmarking of delegation via extend-type Object on JVM Clojure shows that it's fast enough for many inner loops where the work is more substantial than arithmetic. 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
