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English(3)
NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
use English;
...
if ($ERRNO =~ /denied/) { ... }
DESCRIPTION
This module provides aliases for the built-in variables whose names no one
seems to like to read. Variables with side-effects which get triggered
just by accessing them (like $0) will still be affected.
For those variables that have an awk version, both long and short English
alternatives are provided. For example, the $/ variable can be referred to
either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module.
See perlvar for a complete list of these.
PERFORMANCE
This module can provoke sizeable inefficiencies for regular expressions,
due to unfortunate implementation details. If performance matters in your
application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing
use English qw( -no_match_vars ) ;
. It is especially important to do this in modules to avoid penalizing all
applications which use them.
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Index for Section 3 |
|
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Alphabetical listing for E |
|
 |
Top of page |
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