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 "maxvalue2.hpp"
#include <iostream>
#include <algorithm>
int main()
{
int arr[] = {0, 8, 15, 42, 7};
// max value of a filtered range:
auto odd = [] (auto val) { // predicate for odd values
return val % 2 != 0;
};
std::cout << maxValue(arr | std::views::filter(odd)) << '\n'; // OK
}