Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators.3pm

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Version: 2009-03-07 (debian - 07/07/09)

Section: 3 (Bibliothèques de fonctions)

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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 our about them sooner.

AUTHOR

Peter Guzis <pguzis@cpan.org> Copyright (c) 2006-2009 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.