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Implements: https://wg21.link/P2968R2 References: - https://eel.is/c++draft/tuple.general - https://eel.is/c++draft/tuple.syn - https://eel.is/c++draft/tuple.creation - https://github.com/cplusplus/draft/milestone/31 - https://github.com/cplusplus/draft/pull/7109 - https://github.com/cplusplus/papers/issues/1640 - https://cplusplus.github.io/LWG/issue2933 - https://cplusplus.github.io/LWG/issue3978 --------- Co-authored-by: Hristo Hristov <zingam@outlook.com>