MakeMethods::Template:UsersContributed Perl MakeMethods::Template::ClassVar(3)NAMEClass::MakeMethods::Template::ClassVar - Static methods with subclass
variation
SYNOPSIS
package MyObject;
use Class::MakeMethods::Template::ClassVar (
scalar => [ 'foo' ]
);
package main;
MyObject->foo('bar')
print MyObject->foo();
$MyObject::foo = 'bazillion';
print MyObject->foo();
DESCRIPTION
These meta-methods provide access to package (class global) variables,
with the package determined at run-time.
This is basically the same as the PackageVar meta-methods, except that
PackageVar methods find the named variable in the package that defines
the method, while ClassVar methods use the package the object is
blessed into. As a result, subclasses will each store a distinct value
for a ClassVar method, but will share the same value for a PackageVar
or Static method.
Common Parameters: The following parameters are defined for ClassVar
meta-methods.
variable
The name of the variable to store the value in. Defaults to the
same name as the method.
Standard Methods
The following methods from Generic should all be supported:
scalar
string
string_index (?)
number
boolean
bits (?)
array (*)
hash (*)
tiedhash (?)
hash_of_arrays (?)
object (?)
instance (?)
array_of_objects (?)
code (?)
code_or_scalar (?)
See Class::MakeMethods::Template::Generic for the interfaces and
behaviors of these method types.
The items marked with a * above are specifically defined in this
package, whereas the others are formed automatically by the interaction
of this package's generic settings with the code templates provided by
the Generic superclass.
The items marked with a ? above have not been tested sufficiently;
please inform the author if they do not function as you would expect.
vars
This rewrite rule converts package variable names into ClassVar methods
of the equivalent data type.
Here's an example declaration:
package MyClass;
use Class::MakeMethods::Template::ClassVar (
vars => '$VERSION @ISA'
);
MyClass now has methods that get and set the contents of its
$MyClass::VERSION and @MyClass::ISA package variables:
MyClass->VERSION( 2.4 );
MyClass->push_ISA( 'Exporter' );
Subclasses can use these methods to adjust their own variables:
package MySubclass;
MySubclass->MyClass::push_ISA( 'MyClass' );
MySubclass->VERSION( 1.0 );
perl v5.14.22004-09-06MakeMethods::Template::ClassVar(3)
