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The default implementation of Object.clone() performs a shallow copy. When a class desires a deep copy or some other custom behavior, they must implement that in their own clone() method after they obtain the copy from the superclass. The syntax for calling clone in Java is (assuming obj is a variable of a class type that has a public clone ...
In VBA, an assignment of variables of type Object is a shallow copy, an assignment for all other types (numeric types, String, user defined types, arrays) is a deep copy. So the keyword Set for an assignment signals a shallow copy and the (optional) keyword Let signals a deep copy. There is no built-in method for deep copies of Objects in VBA.
A Copy constructor has one formal parameter that is the type of the class (the parameter may be a reference to an object). It is used to create a copy of an existing object of the same class. Even though both classes are the same, it counts as a conversion constructor. While copy constructors are usually abbreviated copy ctor or cctor, they ...
Shallow copy, in contrast to deep copy; Single responsibility principle; Singleton pattern; Singly rooted hierarchy; Slicing; Specification class, a class implementing abstract class; Stack-based memory allocation; Static method; Static typing, in contrast to dynamic typing; Strong and weak typing; Subclass (also called child class or derived ...
That can be expanded to give examples of how overloading applies to object copying. Copy constructors ditto. It still needs to be improved. --Radacovsky 00:00, 27 October 2006 (UTC) Hi i have added an example code which describes the difference between deep and shallow copy to my understanding, please let me know any corrections in the code.
In class-based programming, a factory is an abstraction of a constructor of a class, while in prototype-based programming a factory is an abstraction of a prototype object. A constructor is concrete in that it creates objects as instances of one class, and by a specified process (class instantiation), while a factory can create objects by instantiating various classes, or by using other ...
The compiler generated functions will be public, non-virtual [3] and the copy constructor and assignment operators will receive const& parameters (and not be of the alternative legal forms). [ 4 ] Example
The MazeGame constructor is a template method that adds some common logic. It refers to the makeRoom() factory method that encapsulates the creation of rooms such that other rooms can be used in a subclass. To implement the other game mode that has magic rooms, the makeRoom method may be overridden: