std::function example

std_function_example_1.cpp

#include <iostream>

// Example from Jason Turner's video.
//   https://youtu.be/JtUZmkvroKg?t=290

template <typename T>
void print(T i, const std::string_view s) {
    std::cout << i << ' ' << s << '\n';
}

int main() {
// re-order function parameters
    const auto myFunc = std::bind(&print<int>, std::placeholders::_2, std::placeholders::_1);

    myFunc("Hello", 10);
    myFunc("Hi", 42);

    std::function<void (const std::string_view, int)> f2(myFunc);
    f2("Test string", 15);

    std::function<void (int, const std::string_view)> f3 = print<int>;
    f3(45, "Test string");

    return 0;
}
/*
output:

10 Hello
42 Hi
15 Test string
45 Test string

*/