The following code example is taken from the book
C++20 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2021
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <compare>
struct Coord {
double x{};
double y{};
double z{};
auto operator<=>(const Coord&) const = default;
};