C++ System Programming Cookbook

How to do it...

In this recipe, we'll write a method with one parameter (std::span) that can be used in different contexts. Then, we'll highlight the flexibility it offers:

1. Let's start by adding the includes we need. Then, we need to define the print method by passing the container variable of the std::span type:

#include <iostream>#include <vector>#include <array>#include <span>void print(std::span<int> container){    for(const auto &c : container)         std::cout << c << "-";}

2. In main, we want to print our arrays by calling the print method:

int main(){    int elems[]{4, 2, 43, 12};    print(elems);        std::vector vElems{4, 2, 43, 12};    print(vElems);}

Let's see how this works.