I disagree it's worse that several ifs. Your benchmark shows that one 'last' takes more time than one integer compare. If you make $val equal to 1, and turn the =='s into =~'s, sub1 is faster than sub2 (at least, on my system). The price of a 'last' doesn't depend on the amount of if's nor on what you do in the expression belonging to the if, but it does matter with the multiple ifs.

The fact that if the if/elsif chain is faster won't surprise anyone, as no conditions after a match will be tested, nor will a label need to be searched for (as is done with last).

Abigail

In reply to Re: A Luser's Benchmarking Tale by Abigail-II
in thread A Luser's Benchmarking Tale by Melly

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