The following code example is taken from the book
C++23 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2026
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <print>
#include <set>
#include <ranges>
#include <span>
#include "fibo3.hpp" // coroutine for the first n Fibonacci numbers
int main()
{
std::set names{"tic", "tac", "toe"};
std::println("set: {}", names); // set
std::println("tuples: {}", names | std::views::enumerate); // view of tuples
int arr[] = {0, 8, 15, 47, 11, -1, 42};
std::println("array: {}", arr); // raw array
std::span sp{arr};
std::println("last: {}", sp.last(3)); // span
std::generator<long> fibo = fibonacci(12); // coroutine interface
std::println("fibo: {}", fibo);
}