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Re: Re: grepp -- Perl version of grep

by jdporter (Canon)
on Apr 15, 2004 at 17:51 UTC ( #345479=note: print w/ replies, xml ) Need Help??


in reply to Re: grepp -- Perl version of grep
in thread grepp -- Perl version of grep

Such a benchmark is only valid for tests which can be run by both implementations. Depending on what you're trying to do, slow is better than impossible.

jdporter
The 6th Rule of Perl Club is -- There is no Rule #6.


Comment on Re: Re: grepp -- Perl version of grep
Re: grepp -- Perl version of grep
by Abigail-II (Bishop) on Apr 15, 2004 at 23:27 UTC
    Do you have common regular expressions you'd use 'grepp' for, and for which there's no 'grep' equivalent?

    Abigail

      Well, that bit in the pod about matching GB characters was based on personal experience. Access to Perl 5.8's character-set transliteration and unicode-based character semantics for matches (not to mention the very handy "\p" unicode-based character classes) was the main reason I had to write this tool in the first place. The other bells and whistles (handling compressed data, controlling the input record separator) were after-thoughts -- once I started using this thing on real (multi-language, multi-coded) text data, those other things were just handy and easy to add. But the Encode module was crucial.

      Maybe some people have tricks to search for a specific GB (or Big5, or Shif-JIS) character using plain-old "grep", but I couldn't figure a way to make it trustworhty for such things, and doing it with Perl just made sense.

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