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Perl-Critic-Policy-BuiltinFunctions-ProhibitReturnOr-0.01
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 / Perl::Critic::Policy::BuiltinFunctions::ProhibitReturnOr
Jeremy Leader
and 1 contributors

NAME

Perl::Critic::Policy::BuiltinFunctions::ProhibitReturnOr - Check for "return $x or ..."

DESCRIPTION

return when encountered in an expression returns from the enclosing subroutine, without evaluating the rest of the expression. So a lower-precedence operator (or, and, xor) won't get evaluated after a return. This most commonly appears as the mis-idiom:

    # NO! DON'T DO THIS!
    return $x or die 'Aaaagh! $x was zero!';

Instead, use the higher-precedence || operator, like this:

    return $x || die 'Aaaagh! $x was zero!';

Or separate the two operations, like this:

    $x or die 'Aaaagh! $x was zero!';
    return $x;

CONFIGURATION

This Policy is not configurable except for the standard options.

LICENSE

Copyright (C) 2016 Jeremy Leader.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

Jeremy Leader <jeremy@ziprecruiter.com>

SEE ALSO

Perl::Critic