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.IX Title "Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators 3pm"
.TH Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators 3pm "2018-07-27" "perl v5.26.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators \- Write " !$foo && $bar || $baz " instead of " not $foo && $bar or $baz".
.SH "AFFILIATION"
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Conway advises against combining the low-precedence booleans ( \f(CW\*(C`and
or not\*(C'\fR ) with the high-precedence boolean operators ( \f(CW\*(C`&& || !\*(C'\fR ) in
the same expression.  Unless you fully understand the differences
between the high and low-precedence operators, it is easy to
misinterpret expressions that use both.  And even if you do understand
them, it is not always clear if the author actually intended it.
.PP
.Vb 3
\&    next if not $foo || $bar;  #not ok
\&    next if !$foo || $bar;     #ok
\&    next if !( $foo || $bar ); #ok
.Ve
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
This Policy is not configurable except for the standard options.
.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.