What are move constructors in C++?

Can you explain what move constructors are in C++?

Sure! Move constructors are special constructors in C++ that transfer resources from one object to another, rather than copying them.

How do they differ from copy constructors?

The main difference is that copy constructors create a new object as a copy of an existing object, while move constructors 'steal' the resources, leaving the original object in a valid but unspecified state.

When should I use move constructors?

You should use move constructors when you want to optimize performance by avoiding unnecessary deep copies, especially with large objects.

Can you give me an example of a move constructor?

Certainly! Here's a simple example:

class MyClass {
public:
    MyClass(MyClass&& other) noexcept {
        // Transfer resources from 'other' to 'this'
        this->data = other.data;
        other.data = nullptr; // Leave 'other' in a valid state
    }
};