How to convert lazy sequence to non-lazy in Clojure

Question

I tried the following in Clojure, expecting to have the class of a non-lazy sequence returned:

(.getClass (doall (take 3 (repeatedly rand))))

Answer 1

I stumbled on this this blog post about doall not being recursive. For that I found the first comment in the post did the trick. Something along the lines of:

(use 'closure.walk)
(postwalk identity nested-lazy-thing)

I found this useful in a unit test where I wanted to force evaluation of some nested applications of map to force an error condition.