You have a benchmark problem.

You see, the most vile aspect about $`, $& and $' is the fact that they affect every single regexp in your script or any module used. So if you benchmark it against other approaches that also use regular expressions, you'll slow them down, too. Conclusion: if you want to compare approaches, you should do benchmark them in separate scripts.

You should also check out how speed compares between matches, especially on extremely long strings, with and without one of ($`, $&, $') being mentioned anywhere in your script. Because it's there that it matters, not where you actually make use of them, but everywhere else.

In reply to Re: Re: Re: RegExps, Prematch and Postmatch without efficiency penalty by bart
in thread RegExps, Prematch and Postmatch without efficiency penalty by davido

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