2Re: Not-so-Simple Switch statement

When doing such benchmarks, one should remember that printing is a very slow process. Even more, the time it takes is likely not very constant. So in order to get a real feel for how long the code-under-test really takes, you should do something fast and harmless, like setting a variable. So I replaced everything looking like

print STERR 'foo';
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with

$out = 'foo';
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I do get quite different results than yours. I always get the faster result for "HashSub" over "if", while with you, it's slower. Odd.

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Re: 2Re: Not-so-Simple Switch statement by NetWallah (Canon) on Sep 14, 2003 at 02:07 UTC
I re-ran the tests too, replacing the "print STDERR" with an assignment. The "if" and "HashSub" methods speeds converge faster, with Hashsub becoming faster than "if" at a 22% match rate. The minor differences in results may have to do with OS and perl implementations. I'm running Activestate perl 5.8 under Windows XP.	[reply]