1English(3pm) Perl Programmers Reference Guide English(3pm)
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6 English - use nice English (or awk) names for ugly punctuation
7 variables
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10 use English qw( -no_match_vars ) ; # Avoids regex performance penalty
11 use English;
12 ...
13 if ($ERRNO =~ /denied/) { ... }
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16 This module provides aliases for the built-in variables whose names no
17 one seems to like to read. Variables with side-effects which get
18 triggered just by accessing them (like $0) will still be affected.
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20 For those variables that have an awk version, both long and short
21 English alternatives are provided. For example, the $/ variable can be
22 referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the
23 English module.
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25 See perlvar for a complete list of these.
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28 This module can provoke sizeable inefficiencies for regular
29 expressions, due to unfortunate implementation details. If performance
30 matters in your application and you don't need $PREMATCH, $MATCH, or
31 $POSTMATCH, try doing
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33 use English qw( -no_match_vars ) ;
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35 . It is especially important to do this in modules to avoid penalizing
36 all applications which use them.
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40perl v5.16.3 2013-03-04 English(3pm)