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Manual Reference Pages  -  PERL::CRITIC::POLICY::VALUESANDEXPRESSIONS::PROHIBITMISMATCHEDOPERATORS (3)

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NAME

Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators - Don’t mix numeric operators with string operands, or vice-versa.

CONTENTS

AFFILIATION

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

DESCRIPTION

Using the wrong operator type for a value can obscure coding intent and possibly lead to subtle errors. An example of this is mixing a string equality operator with a numeric value, or vice-versa.



    if ($foo == bar) {}     #not ok
    if ($foo eq bar) {}     #ok
    if ($foo eq 123) {}       #not ok
    if ($foo == 123) {}       #ok



CONFIGURATION

This Policy is not configurable except for the standard options.

NOTES

If warnings are enabled, the Perl interpreter usually warns you about using mismatched operators at run-time. This Policy does essentially the same thing, but at author-time. That way, you can find out about them sooner.

AUTHOR

Peter Guzis <pguzis@cpan.org>

COPYRIGHT

Copyright (c) 2006-2011 Peter Guzis. 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.

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perl v5.20.3 PERL::CRITIC::POLICY::VALUESANDEXPRESSIONS::PROHIBITMISMATCHEDOPERATORS (3) 2016-04-03

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