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 <vector>
#include <list>
#include <ranges>
#include <chrono>
int main()
{
std::vector<int> coll{47, 11, 0, 8, 15, -11, 7};
std::println("coll: {}", coll);
auto isOdd = [] (auto val) { return val % 2 != 0; };
auto asSeconds = [] (auto val) { return std::chrono::milliseconds{val}; };
// store all processed milliseconds objects in a container:
auto lst = coll | std::views::filter(isOdd)
| std::views::transform(asSeconds)
| std::ranges::to<std::list>();
// and process them further:
std::println("lst: {}", lst);
}