What are initializer lists in C++?

What are initializer lists in C++?

Initializer lists in C++ are a way to initialize class members using a specific syntax in the constructor.

Can you give me an example of how to use them?

Sure! Here's a simple example:

class Point {
public:
    int x, y;
    Point(int xVal, int yVal) : x(xVal), y(yVal) {}
};

In this example, x and y are initialized using the initializer list.

What are the benefits of using initializer lists?

Using initializer lists can improve performance by directly initializing members rather than assigning values after the object is created.

Are there any limitations to using initializer lists?

Yes, initializer lists cannot be used to initialize members that are not yet constructed, and they must be used in the order of member declaration.