On Wed, Jun 5, 2013 at 10:19 AM, Alan Watson <[email protected]> wrote:

> Then I fundamentally don't understand the optimization, since instead of
> consing a single procedure we end up consing two boxes.
>

It's a rare case optimization, when the extra boxing is only performed
conditionally.
In the event that neither box occurs, it's a win.

-- 
Alex
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