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Re^3: Module Announcement: Perl-Critic-1.01

by shmem (Canon)
on Jan 27, 2007 at 00:43 UTC ( #596805=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Module Announcement: Perl-Critic-1.01
in thread Module Announcement: Perl-Critic-1.01

update: I overlooked the -no_match_vars (ETOOMUCHNOISE? :-), the impact of use English isn't that nefarious in the advised usage. But even so, I stand to my statement.

jthalhammer,

The magic punctuatinon it is talking about is $@ without which I could not really catch exceptions
use English qw(-no_match_vars); eval { die 'A horrible death' }; print "Something died\n" if $EVAL_ERROR;

Please go read perlvar. I include the relevant bits here:

BUGS
Due to an unfortunate accident of Perl's implementation, "use English" imposes a considerable performance penalty on all regular expression matches in a program, regardless of whether they occur in the scope of "use English". For that reason, saying "use English" in libraries is strongly discouraged. See the Devel::SawAmpersand module documentation from CPAN ( http://www.cpan.org/modules/by-module/Devel/ ) for more information.

Suggesting use English to avoid the use of $@ is just

plain silly

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}


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Re^4: Module Announcement: Perl-Critic-1.01
by jettero (Monsignor) on Jan 27, 2007 at 03:35 UTC

    I dislike English, but it does say: use English qw( -no_match_vars ) ; # Avoids regex performance penalty. Nobody fixed the perlvar page maybe?

    -Paul

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