2010/10/18 Dmitriy S. <samborsk...@yahoo.com>:
> On Oct 18, 5:46 pm, Jürgen Hötzel <juer...@hoetzel.info> wrote:
>> Note the difference between "=" and "==", "=" will result in a cast to
>> the wrapped types for it's arguments.
>
> It seems that '=' is always slower than '==',
> even if types are primitive, look:
>
> Clojure 1.2.0
> user=> (time (let [a (int 3) b (int 5)] (dotimes [_ 1000000] (= a
> b))))
> "Elapsed time: 38.438735 msecs"
> nil
> user=> (time (let [a (int 3) b (int 5)] (dotimes [_ 1000000] (== a
> b))))
> "Elapsed time: 4.79083 msecs"
> nil
> user=>

Rich just added primitve = support:

http://github.com/clojure/clojure/commit/df8c65a286e90e93972bb69392bc106128427dde

Jürgen

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