cppreference.comFunction objects − hash (C++11) Swap − Type operations (C++11) Integer comparison (C++20) pair − tuple (C++11) optional (C++17) expected (C++23) variant (C++17) − any (C++17) String conversions (C++17) Formatting (C++20) bitset − Bit manipulation (C++20) Debugging support (C++26)
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