Orders of magnitude? Is it even worth running things in parallel in this case?
On Sunday, 17 April 2016 07:20:30 UTC-7, tbc++ wrote: > > The cost of creating that extra collection will be vastly overshadowed by > the cost of running pmap. pmap involves the use of several locks, and > thread co-ordination primitives, these will most likely be orders of > magnitude more expensive than an extra allocation. > > Timothy > > On Sun, Apr 17, 2016 at 12:38 AM, JvJ <kfjwh...@gmail.com <javascript:>> > wrote: > >> Perhaps I should have rephrased. I meant calling it in such a way that >> the result is a hash map. >> >> I know I could do something like: >> >> (into a (pmap f a)) >> >> This will give the same result, but there's an extra collection in there >> that I'm not sure is necessary. >> >> >> On Saturday, 16 April 2016 20:15:51 UTC-7, Alex Miller wrote: >>> >>> You can call pmap on hash maps! >> >> -- >> 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 >> <javascript:> >> 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 <javascript:> >> 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 <javascript:>. >> 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.
