Why must the copy assignment operator return a reference/const ...
A bit of clarification as to why it's preferable to return by reference for operator= versus return by value --- as the chain a = b = c will work fine if a value is returned. If you return a reference, minimal work is done. The values from one object are copied to another object.
c++
Always return a reference to the newly altered left hand side, return *this. This is to allow operator chaining, e.g. a = b = c;. Always check for self assignment (this == &rhs). This is …
Why Assignment Operator Overloading Must Return Reference?
In C++, when overloading the assignment operator, we must return a reference to the current object (*this) as it allows for assignment chaining, maintains consistency with built …
Returning References in Copy Assignment
In C++, we return a reference to the object in the copy assignment operator for several important reasons: Chaining Assignments. Returning a reference allows for chaining of assignment …
Copy assignment operator
A copy assignment operator is a non-template non-static member function with the name operator = that can be called with an argument of the same class type and copies the …
Why assignment operator return by refere
I simply removed '&', in the original code that has assignment operators return by reference, from IntCell & operator=. This way the assignment operator no longer returns a …
Why assignment operator overloading must return reference
The reason you should return a mutable reference from your assignment operator is that not doing so causes your returned value to be copied each time your assignment operator is …
Copy constructors and copy assignment operators (C++)
Use an assignment operator operator= that returns a reference to the class type and takes one parameter that's passed by const reference—for example ClassName& …
Copy Constructor vs Assignment Operator in C
Copy constructor and Assignment operator are similar as they are both used to initialize one object using another object. But, there are some basic differences between them: …
COMMENTS
A bit of clarification as to why it's preferable to return by reference for operator= versus return by value --- as the chain a = b = c will work fine if a value is returned. If you return a reference, minimal work is done. The values from one object are copied to another object.
Always return a reference to the newly altered left hand side, return *this. This is to allow operator chaining, e.g. a = b = c;. Always check for self assignment (this == &rhs). This is …
In C++, when overloading the assignment operator, we must return a reference to the current object (*this) as it allows for assignment chaining, maintains consistency with built …
In C++, we return a reference to the object in the copy assignment operator for several important reasons: Chaining Assignments. Returning a reference allows for chaining of assignment …
A copy assignment operator is a non-template non-static member function with the name operator = that can be called with an argument of the same class type and copies the …
I simply removed '&', in the original code that has assignment operators return by reference, from IntCell & operator=. This way the assignment operator no longer returns a …
The reason you should return a mutable reference from your assignment operator is that not doing so causes your returned value to be copied each time your assignment operator is …
Use an assignment operator operator= that returns a reference to the class type and takes one parameter that's passed by const reference—for example ClassName& …
Copy constructor and Assignment operator are similar as they are both used to initialize one object using another object. But, there are some basic differences between them: …