If Perl's function calls are slow, the right response is to try to fix the implementation, not to try to avoid function calls.
Or, if you can try the
, and eat your cake as well as have it...
But, if you study programming languages, you discover that although there is a problem, through a small number of correctness-preserving transformations, this problem can be averted. And by being aware of the problem, you can better appreciate the merits of languages that manage to avoid it.
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