1English(3pm)           Perl Programmers Reference Guide           English(3pm)
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NAME

6       English - use nice English (or awk) names for ugly punctuation
7       variables
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SYNOPSIS

10           use English;
11           use English qw( -no_match_vars ) ;  # Avoids regex performance
12                                               # penalty in perl 5.16 and
13                                               # earlier
14           ...
15           if ($ERRNO =~ /denied/) { ... }
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DESCRIPTION

18       This module provides aliases for the built-in variables whose names no
19       one seems to like to read.  Variables with side-effects which get
20       triggered just by accessing them (like $0) will still be affected.
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22       For those variables that have an awk version, both long and short
23       English alternatives are provided.  For example, the $/ variable can be
24       referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the
25       English module.
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27       See perlvar for a complete list of these.
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PERFORMANCE

30       NOTE: This was fixed in perl 5.20.  Mentioning these three variables no
31       longer makes a speed difference.  This section still applies if your
32       code is to run on perl 5.18 or earlier.
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34       This module can provoke sizeable inefficiencies for regular
35       expressions, due to unfortunate implementation details.  If performance
36       matters in your application and you don't need $PREMATCH, $MATCH, or
37       $POSTMATCH, try doing
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39          use English qw( -no_match_vars ) ;
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41       .  It is especially important to do this in modules to avoid penalizing
42       all applications which use them.
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46perl v5.28.2                      2018-03-01                      English(3pm)