I've been thinking about this for a bit and our posts just happen to be within a minute of each other! A hash bucket is filling up somewhere, I just know it!
> On 4 Mar 2015, at 04:13, Colin Yates <colin.ya...@gmail.com> wrote: > > Ha - the irony of you and I posting a message about uniqueness at pretty much > the same time :). > >> On 3 Mar 2015 20:11, "Lucas Bradstreet" <lucasbradstr...@gmail.com> wrote: >> Hi, >> >> Nice work! >> >> I wanted to clarify something: it seems to me that the v1 uuids clj-uuid >> generate are not exactly equivalent or comparable to the uuids generated by >> java.util/randomUUID? It appears that V1 uuids are time (and MAC) based and >> don't use a cryptographic random number generator, so the use cases are >> different and the speed difference seems like more of a trade off. >> >> If I'm completely off base then please just say so. >> >> Thanks for the good work. Even with the above limitations I can see myself >> using the faster version in the future. >> >> Lucas >> >>> On 2 Mar 2015, at 14:52, Jacob Strength <mypci...@gmail.com> wrote: >>> >>> That is pretty amazing, I'll have to remember this library next time I need >>> to use UUID's. >>> Also I think you meant 450% faster. >>> >>>> On Sunday, March 1, 2015 at 5:35:16 PM UTC-7, danl...@gmail.com wrote: >>>> Ok, for anyone following my adventures optimizing clj-uuid, I've gotten >>>> another substantial win. >>>> Check it out: http://danlentz.github.io/clj-uuid >>>> >>>> #'uuid/v1: 443 nanoseconds >>>> #'java.util.UUID/randomUUID: 2012 nanoseconds >>>> >>>> Also, the test suite has much greater coverage with individual tests for >>>> each v1, v,3, v4, v5 uuid version. >>>> And, finally, there more interesting notes about some of the esoteric >>>> details of the node-id representation >>>> and the way it is calculated to disambiguate it from any legal 802 MAC >>>> hardware address. And more.... ;) >>>> >>>> >>>> ====================================================================== >>>> >>>> user> (criterium/bench (uuid/v1)) >>>> >>>> Evaluation count: 139356300 in 60 samples of 2322605 calls. >>>> Execution time mean: 443.707611 ns >>>> >>>> >>>> user> (criterium/bench (java.util.UUID/randomUUID)) >>>> >>>> Evaluation count : 30850980 in 60 samples of 514183 calls. >>>> Execution time mean : 2.012861 µs >>>> >>>> >>> >>> -- >>> 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. >> >> -- >> 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. > > -- > 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. -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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