Four is a Clojure library for generating random numbers, with both stateful and stateless generators.
Stateless generators are immutable (in contrast to java.util.Random which all Clojure code I've seen uses), and the only one I've made so far can only generate Longs, and tries (unsuccessfully?) to do so with the same algorithm that java.util.Random uses.
So far this is just the four.stateful namespace with a *rand* dynamic
var and equivalents of rand, rand-int, rand-nth, and shuffle.
[com.gfredericks/four "0.2.0"]
(require '[four.stateless :as rnd])
(let [r (rnd/java-random 42)]
(rnd/next-long r))
;; => [-5507218355876663470 #four.stateless.JavaRandom{:seed 129149386787357}]Copyright © 2013 Gary Fredericks
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.