How do I use std::unique_ptr in a function?

How do I use std::unique_ptr in a function?

You can pass a std::unique_ptr to a function by reference or by moving it. Would you like an example?

Yes, please provide an example.

Sure! Here's a simple example:

#include <iostream>
#include <memory>

void process(std::unique_ptr<int> ptr) {
    std::cout << "Value: " << *ptr << std::endl;
}

int main() {
    std::unique_ptr<int> myPtr = std::make_unique<int>(42);
    process(std::move(myPtr));
    return 0;
}

This moves the ownership of the unique_ptr to the function.

What happens if I try to use myPtr after moving it?

After moving, myPtr will be null, and trying to dereference it will lead to undefined behavior. Always ensure it's valid before use!