But if done right it's 1 compilation versus 12 compilations and 20 stringifications over the whole runtime of the script! According to the first of your benchmarks about 1 millisecond of difference. Huge deal indeed!

If your regexes grow way too big, do whatever you must. Under normal conditions the difference in negligible, while the fact that I don't have to worry whether I'm writing a regexp or a single quoted string that will eventually happen to be part of a regexp is not. Even though or rather just because the difference is slight and changes the behaviour rarely.

Jenda
Enoch was right!
Enjoy the last years of Rome.

In reply to Re^10: Common Perl Pitfalls by Jenda
in thread Common Perl Pitfalls by Joe_

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