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Diffstat (limited to 'pod/perlvar.pod')
| -rw-r--r-- | pod/perlvar.pod | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/pod/perlvar.pod b/pod/perlvar.pod index 14324a5df2..47960044df 100644 --- a/pod/perlvar.pod +++ b/pod/perlvar.pod @@ -61,11 +61,7 @@ Nevertheless, if you wish to use long variable names, you need only say: at the top of your program. This aliases all the short names to the long names in the current package. Some even have medium names, generally -borrowed from B<awk>. To avoid a performance hit, if you don't need the -C<$PREMATCH>, C<$MATCH>, or C<$POSTMATCH> it's best to use the C<English> -module without them: - - use English '-no_match_vars'; +borrowed from B<awk>. For more info, please see L<English>. Before you continue, note the sort order for variables. In general, we first list the variables in case-insensitive, almost-lexigraphical @@ -783,15 +779,6 @@ we have not made another match: $1 is Mutt; $2 is Jeff $1 is Wallace; $2 is Grommit -If you are using Perl v5.18 or earlier, note that C<use -English> imposes a considerable performance penalty on all regular -expression matches in a program because it uses the C<$`>, C<$&>, and -C<$'>, regardless of whether they occur in the scope of C<use -English>. For that reason, saying C<use English> in libraries is -strongly discouraged unless you import it without the match variables: - - use English '-no_match_vars' - The C<Devel::NYTProf> and C<Devel::FindAmpersand> modules can help you find uses of these problematic match variables in your code. |