I'm building a large vector of longs from a lazy seq, and trying to
use vector-of in order to reduce the storage requirements. Although
there is no reflection warning (and I've turned on *warn-on-
reflection*), in my profiler I see that the majority of the time is
spent invoking clojure.lang.Reflector.getMethods() . I assume that
behind the scenes, there is a reflection call occurring to verify that
I'm "really" passing in longs. I've tried converting to a raw Java
array of longs first and type-hinting that with the class string (as
per http://dev.clojure.org/jira/browse/CLJ-851 ), but I still spend
most of my time in getMethods. Am I right in thinking this is
suboptimal, and any idea of how I fix it?
;All of these spend most of their time in reflection
(apply vector-of :int (range 10000000))
(apply vector-of :int ^"[J>" (range 10000000))
(apply vector-of :int ^"[J>" (long-array (range 10000000)))
(apply vector-of :int ^{:tag 'longs} (long-array (range 10000000)))
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