Vittorio Romeo on Twitter: "When you get inspired to write some #cpp preprocessor macros in the middle of the night. Can you guess what `WITH_INDEX_PACK` expands to? https://t.co/hA3uPF9b7F" / Twitter
笔记No.5]C++模板攻略-深度剖析Parameter Expansion - 知乎
Generic Tuple Hashing With Modern C++
C++ Reference: std::integer_sequence, std::index_sequence