Andrey Semashev wrote:
3. Since there is already the std::hash infrastructure that is supported by std unordered containers and more, have you considered providing means to simplify integration of user types supporting Boost.Hash2 protocol with std::hash?
There are several ways in which you can produce a std::hash-compatible adaptor using the library - there are examples showing them - and I haven't yet settled on which one is the correct one to provide. A std::hash specialization isn't a good way to do it because you can't pass an initial seed, which is a poor practice in 2025. But in principle, if we have (settled on) a particular adaptor hash<T, H>, providing the std::hash specialization is a one liner: template<> struct std::hash<MyType>: hash<MyType, MyFavoriteHash> {}; There's not much point in automating or macroizing it.