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


Jeffrey Ryan Thalhammer <thaljef@cpan.org>


Copyright (c) 2005-2007 Jeffrey Ryan Thalhammer. All rights reserved.

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.