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Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators

NAME

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

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 AT cpan DOT 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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