What are some alternatives to function pointers in C++?

What are some alternatives to function pointers in C++?

There are several alternatives to function pointers in C++, such as functors, lambda expressions, and std::function.

Can you explain what a functor is?

A functor is an object that can be called as if it were a function. It typically overloads the operator() to achieve this.

How do lambda expressions compare to function pointers?

Lambda expressions provide a more concise syntax and can capture variables from their surrounding scope, unlike function pointers.

What is std::function and when should I use it?

std::function is a versatile wrapper for callable entities, allowing you to store, pass, and invoke functions, functors, or lambdas.

Are there any performance considerations with these alternatives?

Yes, while alternatives like std::function are more flexible, they may introduce some overhead compared to raw function pointers.