'strlen' of a constant string Post: 302224560

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perl::critic::policy::builtinfunctions::prohibituniversalcan

Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversaUser(Contributed Perl DocumPerl::Critic::Policy::BuiltinFunctions::ProhibitUniversalCan(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversalCan - Write "eval { $foo->can($name) }" instead of "UNIVERSAL::can($foo, $name)".

AFFILIATION

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

DESCRIPTION

	   print UNIVERSAL::can($obj, 'Foo::Bar') ? 'yes' : 'no';  #not ok
	   print eval { $obj->can('Foo::Bar') } ? 'yes' : 'no';    #ok

       As of Perl 5.9.3, the use of UNIVERSAL::can as a function has been deprecated and the method form is preferred instead.	Formerly, the
       functional form was recommended because it gave valid results even when the object was "undef" or an unblessed scalar.  However, the
       functional form makes it impossible for packages to override "can()", a technique which is crucial for implementing mock objects and some
       facades.

       See UNIVERSAL::can for a more thorough discussion of this topic.

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversalIsa

AUTHOR

       Chris Dolan <cdolan@cpan.org>

COPYRIGHT

       Copyright (c) 2006-2011 Chris Dolan.

       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.

perl v5.16.3							    2014-06-09	   Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversalCan(3)