std::bind example

std_bind_example_1.cpp

#include <iostream>

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

void print(int i, const std::string_view s) {
    std::cout << i << ' ' << s << '\n';
}

int main() {

    int i = 10;
    const auto myFunc = std::bind(&print, std::ref(i), std::placeholders::_1);

    myFunc("Hello");

    i = 42;
    myFunc("Hi");


    return 0;
}
/*
output:

10 Hello
42 Hi
*/

std_bind_example_2.cpp

#include <iostream>

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

void print(int i, const std::string_view s) {
    std::cout << i << ' ' << s << '\n';
}

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

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

    return 0;
}
/*
output:

10 Hello
42 Hi
*/

std_bind_example_3.cpp

// 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);

    return 0;
}
/*
output:

10 Hello
42 Hi
*/