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Re: Re: New regex trick...

by mischief (Hermit)
on Jul 24, 2002 at 13:00 UTC ( #184800=note: print w/ replies, xml ) Need Help??


in reply to Re: New regex trick...
in thread New regex trick...

Can you post some benchmarks for the module? Or are the ones you posted above from the module (I'm assuming not).


Comment on Re: Re: New regex trick...
Regexp::Keep benchmark
by japhy (Canon) on Jul 24, 2002 at 14:35 UTC
    Here's the code:
    use Benchmark 'cmpthese'; use Regexp::Keep; my $s = "abc.def.ghi.jkl"; cmpthese(-5, { japhy => sub { (my $x = $s) =~ s/.*\K\..*// }, old => sub { (my $x = $s) =~ s/(.*)\..*/$1/ }, });
    In 5.6.1:
    old = 40280.54/s japhy = 74338.79/s
    And with 5.8.0 (using the module, NOT my patch):
    old = 58188.18/s japhy = 102409.25/s
    So there's an appreciable speed-up.

    _____________________________________________________
    Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
    s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

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