
What is a copy constructor in C++? - Stack Overflow
Jan 30, 2010 · Copy Constructor is an essential part of C++. Even-though any C++ compiler provides default copy constructor if at all if we don't define it explicitly in the class, We write copy constructor …
c++ - The copy constructor and assignment operator - Stack Overflow
Mar 20, 2011 · No, they are different operators. The copy constructor is for creating a new object. It copies an existing object to a newly constructed object.The copy constructor is used to initialize a …
When do we have to write a user-defined copy constructor?
Jul 19, 2010 · I know that C++ compiler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples?
c++ - What's the difference between assignment operator and copy ...
The difference between the copy constructor and the assignment operator causes a lot of confusion for new programmers, but it’s really not all that difficult.
Implementing the copy constructor in terms of operator=
Apr 22, 2014 · Typically, the copy assignment operator will do some cleanup. If your class has a pointer to dynamically allocated memory, the first thing the copy-assignment operator should do is free that …
What is the difference between the copy constructor and move ...
So, the only difference between a copy constructor and a move constructor is whether the source object that is passed to the constructor will have its member fields copied or moved into the new object. I …
c++ - Can I call a copy constructor explicitly? - Stack Overflow
I'm a little confused as to the mechanics of the copy constructor. Correct me if I'm wrong: If a method takes a reference to an object as a parameter, and the class defines a copy construtor, the...
c++ - What is the copy-and-swap idiom? - Stack Overflow
The copy-and-swap idiom is a way to do just that: It first calls a class' copy constructor to create a temporary object, then swaps its data with the temporary's, and then lets the temporary's destructor …
Why C++ copy constructor must use const object?
Copy constructors should not modify the object it is copying from which is why the const is preferred on the other parameter. Both will work, but the const is preferred because it clearly states that the object …
c++ - Copy constructor of a template class - Stack Overflow
I read that template copy-con is never the default copy constructor, and template assignment-op is never a copy assignment operator. I couldn't understand why this restriction is needed, and straight