destroy
destroy — destroys a class instance.
Arguments
- instance
An instance of any class.
Returns
t when successful,
else error.
Description
This function destroys
instances of classes. When a class instance is destroyed, its
data type changes to destroyed instance.
You can test for a destroyed instance by using the predicate
destroyed_p.
Example
Gamma> class RegPolygon{sides; length;}
(defclass RegPolygon nil [][length sides])
Gamma> polyA = new(RegPolygon);
{RegPolygon (length) (sides)}
Gamma> destroy (polyA);
t
Gamma> polyA;
#<Destroyed Instance>
Gamma> destroyed_p(polyA);
t
Gamma>
