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.IX Title "Perl::Critic::Policy::CodeLayout::ProhibitQuotedWordLists 3pm"
.TH Perl::Critic::Policy::CodeLayout::ProhibitQuotedWordLists 3pm "2020-05-17" "perl v5.30.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Perl::Critic::Policy::CodeLayout::ProhibitQuotedWordLists \- Write "qw(foo bar baz)" instead of "(\*(Aqfoo\*(Aq, \*(Aqbar\*(Aq, \*(Aqbaz\*(Aq)".
.SH "AFFILIATION"
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Conway doesn't mention this, but I think \f(CW\*(C`qw()\*(C'\fR is an underused
feature of Perl.  Whenever you need to declare a list of one-word
literals, the \f(CW\*(C`qw()\*(C'\fR operator is wonderfully concise, and makes it
easy to add to the list in the future.
.PP
.Vb 2
\&    @list = (\*(Aqfoo\*(Aq, \*(Aqbar\*(Aq, \*(Aqbaz\*(Aq);  #not ok
\&    @list = qw(foo bar baz);        #ok
\&
\&    use Foo (\*(Aqfoo\*(Aq, \*(Aqbar\*(Aq, \*(Aqbaz\*(Aq);  #not ok
\&    use Foo qw(foo bar baz);        #ok
.Ve
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
This policy can be configured to only pay attention to word lists with
at least a particular number of elements.  By default, this value is
2, which means that lists containing zero or one elements are ignored.
The minimum list size to be looked at can be specified by giving a
value for \f(CW\*(C`min_elements\*(C'\fR in \fI.perlcriticrc\fR like this:
.PP
.Vb 2
\&    [CodeLayout::ProhibitQuotedWordLists]
\&    min_elements = 4
.Ve
.PP
This would cause this policy to only complain about lists containing
four or more words.
.PP
By default, this policy won't complain if any of the values in the list
contain non-word characters.  If you want it to, set the \f(CW\*(C`strict\*(C'\fR
option to a true value.
.PP
.Vb 2
\&    [CodeLayout::ProhibitQuotedWordLists]
\&    strict = 1
.Ve
.SH "NOTES"
.IX Header "NOTES"
In the \s-1PPI\s0 parlance, a \*(L"list\*(R" is almost anything with parentheses.
I've tried to make this Policy smart by targeting only \*(L"lists\*(R" that
could be sensibly expressed with \f(CW\*(C`qw()\*(C'\fR.  However, there may be some
edge cases that I haven't covered.  If you find one, send me a note.
.SH "IMPORTANT CHANGES"
.IX Header "IMPORTANT CHANGES"
This policy was formerly called \f(CW\*(C`RequireQuotedWords\*(C'\fR which seemed a
little counter-intuitive.  If you get lots of \*(L"Cannot load policy
module\*(R" errors, then you probably need to change \f(CW\*(C`RequireQuotedWords\*(C'\fR
to \f(CW\*(C`ProhibitQuotedWordLists\*(C'\fR in your \fI.perlcriticrc\fR file.
.SH "AUTHOR"
.IX Header "AUTHOR"
Jeffrey Ryan Thalhammer <jeff@imaginative\-software.com>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2005\-2011 Imaginative Software Systems.  All rights reserved.
.PP
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.  The full text of this license
can be found in the \s-1LICENSE\s0 file included with this module.