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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.
[2] An amendment to this rule is that if the class is designed in such a way that resource acquisition is initialization (RAII) is used for all its (nontrivial) members, the destructor may be left undefined (also known as The Law of The Big Two [3]). A ready-to-go example of this approach is the use of smart pointers instead of plain ones. [3]
The process of actually making another exact replica of the object instead of just its reference is called cloning. In most languages, the language or libraries can facilitate some sort of cloning. In Java, the Object class contains the clone() method, which copies the object and returns a reference to that copied object.
Array's destructor deletes the data array of the original, therefore, when it deleted copy's data, because they share the same pointer, it also deleted first's data. Line (2) now accesses invalid data and writes to it. This produces a segmentation fault. If we write our own copy constructor that performs a deep copy then this problem goes away.
An active-duty Marine has been charged with murdering a contestant from a racy reality TV show whose body was found in a pond a week after she vanished 50 miles away while working as an escort.
They’re not always the same thing. Here’s what you need to know.
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 ...
3. Kia Sportage Hybrid. The Sportage will face more competition when Trump takes office and puts his focus on traditional vehicles like hybrids and EVs instead. As it costs around $29,965, the Kia ...