Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators - Write !$foo && $bar || $baz instead of not $foo && $bar or $baz.


This Policy is part of the core Perl::Critic distribution.


Conway advises against combining the low-precedence booleans ( and or not ) with the high-precedence boolean operators ( && || ! ) 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.

    next if not $foo || $bar;  #not ok
    next if !$foo || $bar;     #ok
    next if !( $foo || $bar ); #ok


This Policy is not configurable except for the standard options.


Jeffrey Ryan Thalhammer <>


Copyright (c) 2005-2023 Imaginative Software Systems

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 LICENSE file included with this module.