External data
package MyObject;
use Class::MakeMethods::Template::InsideOut (
scalar => [ 'foo', 'bar' ]
);
sub new { ... }
package main;
my $obj = MyObject->new( foo => "Foozle", bar => "Bozzle" );
print $obj->foo(); # Prints Foozle
$obj->bar("Bamboozle"); # Sets $obj's bar value
Supports the Generic object constructor and accessors meta-method types, but accepts any object as the underlying implementation type, with member data stored in external indices.
Each method stores the values associated with various objects in an hash keyed by the object's stringified identity. Since that hash is accessible only from the generated closures, it is impossible for foreign code to manipulate those values except through the method interface.
A \s-1DESTROY\s0 method is installed to remove data for expired objects from the various hashes. (If the \s-1DESTROY\s0 method is not called, your program will not release this data and memory will be wasted.)
Common Parameters: The following parameters are defined for InsideOut meta-methods.
An auto-vivified reference to a hash to be used to store the values for each object.
Note that using InsideOut meta-methods causes the installation of a \s-1DESTROY\s0 method in the calling class, which deallocates data for each instance when it is discarded.
\s-1NOTE:\s0 This needs some more work to properly handle inheritance.
The following methods from Generic are all 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.
boolean_index => [ qw / foo bar baz / ]
Like InsideOut:boolean, boolean_index creates x, set_x, and clear_x methods. However, it also defines a class method find_x which returns a list of the objects which presently have the x-flag set to true.
Note that to free items from memory, you must clear these bits!