C++2019 _hot_ Access

Concepts replace SFINAE with readable, checkable template requirements. #include <ranges> #include <vector> namespace rv = std::ranges::views;

If you’re still writing new / delete or raw loops with index variables, . Embrace it. “C++20 feels like a new language – but still C++.” – Bjarne Stroustrup c++2019

auto result = std::vector1,2,3,4,5 | rv::filter([](int x) return x%2==0; ) | rv::transform([](int x) return x*x; ); // result = 4, 16 Concepts replace SFINAE with readable