C++17 STL Cookbook

How to do it...

Applying a structured binding in order to assign multiple variables from one bundled structure is always one step. Let's first see how it was done before C++17. Then, we can have a look at multiple examples that show how we can do it in C++17:

• Accessing individual values of an std::pair: Imagine we have a mathematical function, divide_remainder, which accepts a dividend and a divisor parameter and returns the fraction of both as well as the remainder. It returns those values using an std::pair bundle:

        std::pair<int, int> divide_remainder(int dividend, int divisor);

Consider the following way of accessing the individual values of the resulting pair:

        const auto result (divide_remainder(16, 3)); std::cout << "16 / 3 is ...