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Re: Re: Re: Common Regex Gotchas

by chipmunk (Parson)
on May 09, 2001 at 00:30 UTC ( #78944=note: print w/replies, xml ) Need Help??


in reply to Re: Re: Common Regex Gotchas
in thread Common Regex Gotchas

Happily, that doesn't appear to be the case. I don't see any occurence of the $& et al. variables in the code for Benchmark.pm

The real problem here is the use of /e on the substitution, when this would work just as well and be much more efficient: s/(\w+)/\U$1/g;

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Re: Re: Re: Re: Common Regex Gotchas
by dws (Chancellor) on May 09, 2001 at 00:32 UTC
    I don't see any occurence of the $& et al. variables in the code for Benchmark.pm

    I think what our Anonymous friend means is that if one of the routines being benchmarked uses $&, then all routines suffer (unfairly) from the overhead.

      I'm pretty sure that the AM was referring to the module itself, especially since none of the code in this thread actually uses $& et al.

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[shmem]: Lady_Aleena: what editor are you using, on what platform?
[Lady_Aleena]: shmem, geany on Debian jessie.
[shmem]: some experience with vim?
[Lady_Aleena]: None
[shmem]: I don't know geany, and don't know whether it has support for ctags.
[Lady_Aleena]: ctags?
[shmem]: ctags is a program which (recursively) extracts the symbols from source and stores them in a one-file database. This allows you to query the locations where these symbols (e.g. a subroutine name) are used anywhere in the source code tree...
[shmem]: ...from inside the editor.
[shmem]: apt-get install exuberant-ctags
[Lady_Aleena]: I think I heard vim has a big learning curve.

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