Data.generative already has this function and many more, I realized. /Linus
On Wednesday, June 4, 2014, Mars0i <marsh...@logical.net> wrote: > > > On Wednesday, June 4, 2014 2:55:20 AM UTC-5, Gunnar Völkel wrote: >> >> Once you notice that you usually need a fast solution. >> > > Yes! > > >> The easiest solution is to just pass around an instance of >> java.util.Random which you create with the desired seed. Another options is >> to have a constructor function returning a "rand" function. >> >> (defn prng [seed] >> (let [rnd (java.util.Random. (long seed))] >> (fn rand [] (.nextDouble rnd)))) >> > > Thanks. This is very helpful. I have not been thoroughly immersed in the > Java world for many years, so I have to spend a bit of time studying in > order to figure out this sort of thing on my own. (I like Clojure because > I usually only need to deal with Java when I want to, but there are times > when it's necessary.) > > >> But having a built-in rebindable (thread-local) "rand" is preferable in >> the long run. >> > > Yes, especially since rolling one's own version means coding up any > higher-level functions that use randomness, when others who have thought > more about relevant algorithms have already done that work. Then again, > their source code is usually available, so one can copy it. For my present > purposes, data.generators or bigml/sampling might do what I need. > > -- > 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 > <javascript:_e(%7B%7D,'cvml','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 > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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 > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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.
