I'm going to nitpick horribly here: in Clojure, an array is just a Java array. But what most people use are vectors, which are immutable. 'transient' returns

I'm going to nitpick horribly here: in Clojure, an array is just a Java array. But what most people use are vectors, which are immutable. 'transient' returns a mutable vector, not an array.