No, it actually compiles down to a pile of ifs, and try/catch/throws (for backtracking). It's pretty fast, but it won't be as fast as a jump table for complex matches, that's for sure.
Timothy On Fri, May 15, 2015 at 5:53 PM, Surgo <morgon.kan...@gmail.com> wrote: > core.match compiles down to case, does it not? So the comparisons here are > similar: http://insideclojure.org/2015/04/27/poly-perf/ > > -- Morgon > > On Friday, May 15, 2015 at 2:57:23 PM UTC-4, tbc++ wrote: >> >> One big thing to consider is that core.match is closed dispatch. If you >> write a function that uses core.match, I can't extend it inside my code. >> This is something that is possible with both multi-methods and protocols. >> >> Timothy >> >> On Fri, May 15, 2015 at 12:49 PM, Sam Raker <sam....@gmail.com> wrote: >> >>> The discussion/post-linked-to in >>> https://groups.google.com/d/msg/clojure/eoAp6QVimYI/iipmEJNKdrIJ have >>> got me thinking about protocols & multimethods, which I admittedly have >>> possibly never actually used, now that I think about it. I'm wondering how >>> they differ from core.match[1]. I realize protocols, specifically, have a >>> niche for when you have concrete type information about your data and want >>> better performance. I'm a little less clear about multimethods--in >>> particular, I just considered using multimethods for something, and then >>> ended up reaching for core.match because it seemed more closure-friendly. >>> >>> What, if any, are the benefits of using protocols/multimethods over >>> core.match, or vice versa? When would you reach for one and definitely not >>> the other(s)? >>> >>> >>> [1] https://github.com/clojure/core.match >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to clo...@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+u...@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+u...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> “One of the main causes of the fall of the Roman Empire was that–lacking >> zero–they had no way to indicate successful termination of their C >> programs.” >> (Robert Firth) >> > -- > 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/d/optout. > -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- 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/d/optout.
