http://www.perlmonks.org?node_id=37079


in reply to The Best Infinite Loop

Seems odd, that Perl would supply special while () syntax (while with nothing in the parens), and not make it at least as fast other other comman idioms. Try benchmarking that.

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(zdog) RE: (2) The Best Infinite Loop
by zdog (Priest) on Oct 18, 2000 at 01:51 UTC
    I never realized that while() could be used as an infinite loop, so I went and benchmarked it up against for (;;) and I got these results:
    Benchmark: timing 20000 iterations of for, while()... for: 45 wallclock secs (43.95 usr + 0.00 sys = 43.95 CPU) @ 45 +5.06/s (n=20000) while(): 43 wallclock secs (43.28 usr + 0.00 sys = 43.28 CPU) @ 46 +2.11/s (n=20000)

    Note: Do not be alarmed if it took longer this time than in the above post, I did it on a slower computer.

    Sooo..., I guess you were right!!

    Zenon Zabinski | zdog | zdog7@hotmail.com