On Mon, Jun 21, 2010 at 1:19 AM, Mark Engelberg <mark.engelb...@gmail.com>wrote:
> The arguments seem to be winding down, so I thought this would be a > good time to summarize my thoughts. > I will do that too. The two sides of the arguments have both good points and won't change their position. So, my proposal: - a different set of labeled operators +', +# per family of return value. (boxed, long, maybe more to come...) - the default for the non-labeled operators +,-... can be choose either by a flag or by a ns trickery. ( I have to say I advocate the flag) - the flag also change the default for literals. - Default for the the non-labeled operator is boxed. It removes the problem for loop/recur, and gives back the problems are they are now. - People that don't know use the default operators - people that explicitly knows their code has some interesting properties (always small int, can produce a big int with very small inputs) specifies it by using explicitly the specialised operators. The flag *use-primitive-as-default* is a big help for optimization. Most of the performance hits of boxing do not show in profiling. (It slows down a lot of functions, by memory access and - more importantly - filling the cache with garbage, that do not seem to be arithmetic-heavy) The do-not-worry default allows an easy learning curve. The specialized operators in both directions allows to explicit some semantic differences in the meaning of the operations. It is good to give a way to people to specify, if they want to, what they know about their program. -- 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
