Here is a list of all documented functions with links to the documentation:

• operator!=() : bitset_new.h, to_arithmetic.h
• operator<<() : string_view.h
• operator==() : bitset_new.h, to_arithmetic.h
• swap() : array_view.h, array_wrapper.h, expected.h, optional.h, bitset_legacy.h, bitset_new.h, string_view.h