overloading(3pm) [osx man page]

overloading(3pm)					 Perl Programmers Reference Guide					  overloading(3pm)

NAME

       overloading - perl pragma to lexically control overloading

SYNOPSIS

	   {
	       no overloading;
	       my $str = "$object"; # doesn't call stringification overload
	   }

	   # it's lexical, so this stringifies:
	   warn "$object";

	   # it can be enabled per op
	   no overloading qw("");
	   warn "$object";

	   # and also reenabled
	   use overloading;

DESCRIPTION

       This pragma allows you to lexically disable or enable overloading.

       "no overloading"
	     Disables overloading entirely in the current lexical scope.

       "no overloading @ops"
	     Disables only specific overloads in the current lexical scope.

       "use overloading"
	     Reenables overloading in the current lexical scope.

       "use overloading @ops"
	     Reenables overloading only for specific ops in the current lexical scope.

perl v5.16.2							    2012-10-11							  overloading(3pm)

XML::LibXML::AttributeHash(3pm) 			User Contributed Perl Documentation			   XML::LibXML::AttributeHash(3pm)

NAME

       XML::LibXML::AttributeHash - tie an XML::LibXML::Element to a hash to access its attributes

SYNOPSIS

	tie my %hash, 'XML::LibXML::AttributeHash', $element;
	$hash{'href'} = 'http://example.com/';
	print $element->getAttribute('href') . "
";

DESCRIPTION

       This class allows an element's attributes to be accessed as if they were a plain old Perl hash. Attribute names become hash keys.
       Namespaced attributes are keyed using Clark notation.

	my $XLINK = 'http://www.w3.org/1999/xlink';
	tie my %hash, 'XML::LibXML::AttributeHash', $element;
	$hash{"{$XLINK}href"} = 'http://localhost/';
	print $element->getAttributeNS($XLINK, 'href') . "
";

       There is rarely any need to use XML::LibXML::AttributeHash directly. In general, it is possible to take advantage of XML::LibXML::Element's
       overloading. The example in the SYNOPSIS could have been written:

	$element->{'href'} = 'http://example.com/';
	print $element->getAttribute('href') . "
";

       The tie interface allows the passing of additional arguments to XML::LibXML::AttributeHash:

	tie my %hash, 'XML::LibXML::AttributeHash', $element, %args;

       Currently only one argument is supported, the boolean "weaken" which (if true) indicates that the tied object's reference to the element
       should be a weak reference. This is used by XML::LibXML::Element's overloading. The "weaken" argument is ignored if you don't have a
       working Scalar::Util::weaken.

perl v5.14.2							    2012-06-20					   XML::LibXML::AttributeHash(3pm)