What is std::function in C++17?

Can you explain what std::function is in C++17?

Sure! std::function is a versatile wrapper for callable objects in C++17, allowing you to store functions, lambda expressions, and bind expressions.

How does it differ from function pointers?

Unlike function pointers, std::function can hold any callable type, including lambdas and member functions, providing more flexibility.

Can you give me an example of how to use std::function?

Absolutely! Here's a simple example:

#include <iostream>
#include <functional>

void greet() {
    std::cout << "Hello, World!" << std::endl;
}

int main() {
    std::function<void()> func = greet;
    func(); // Calls greet()
    return 0;
}
}```