I also have to agree that ranges functionality in C++20 is somewhat warty. I wonder, though, how much time the Pythagorian triplets example takes to compile wit

I also have to agree that ranges functionality in C++20 is somewhat warty. I wonder, though, how much time the Pythagorian triplets example takes to compile with C++20. The ranges library simulated functionality which would later go into the language, so the comparison is not entirely fair.