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.IX Title "Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators 3pm"
.TH Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators 3pm "2018-07-27" "perl v5.26.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMismatchedOperators \- Don't mix numeric operators with string operands, or vice\-versa.
.SH "AFFILIATION"
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH "DESCRIPTION"
.IX Header "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.
.PP
.Vb 4
\&    if ($foo == \*(Aqbar\*(Aq) {}     #not ok
\&    if ($foo eq \*(Aqbar\*(Aq) {}     #ok
\&    if ($foo eq 123) {}       #not ok
\&    if ($foo == 123) {}       #ok
.Ve
.SH "CONFIGURATION"
.IX Header "CONFIGURATION"
This Policy is not configurable except for the standard options.
.SH "NOTES"
.IX Header "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.
.SH "AUTHOR"
.IX Header "AUTHOR"
Peter Guzis <pguzis@cpan.org>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2006\-2011 Peter Guzis.  All rights reserved.
.PP
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 \s-1LICENSE\s0 file included with this module.