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                                            Ryan Greenblatt

Defaulting <=> and == where possible (c++20)

Defaulting operator== can make constexpr functions much faster. For example, consider the following compile time benchmark program: ```cpp #include #include #include #include #include #include namespace hana = boost::hana; static constexpr...

Defaulting <=> and == where possible (c++20)

gcc bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98712

Defaulting <=> and == where possible (c++20)

> Is everything working with your changes? Do all of the tests pass? (ie `make check`) Nope. It can't build on clang because clang doesn't have [P2002R1](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2002r1.html) fully implemented which...