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Re: Common Lisp solved this problem 20 years ago
"John.Cowan" <jcowan@xxxxxxxxxxxxxxxxx> writes:
> I assume you mean "must not affect the behavior, but may affect the
> performance" (= speed). Unfortunately, you have to be intimately
> familiar with your CL implementation to know when declarations are
> useless, when they are critical to performance, and when they actually
> make things worse.
Yes, but I don't see any way around that problem.
It should be possible to guarantee that declarations never make