On 02/04/18 01:53, Niall Douglas via Boost wrote:
*locally*. Indeed, that's the whole point of the Expected proposal, and WG21 has greenlit that one. It's coming to future C++ whether you like it or not (bar some major surprise).
This is an important point. The std::expected proposal is a vocabulary type that has not gathered much practical experience prior to being proposed for standardization, unlike other vocabulary types like std::optional, std::any, and std::variant. Boost.Outcome gives us an opportunity to gather such practical experience, which can then serve as input to the standardization process. If our community goals includes being an incubator for some C++ library proposals, then we should not evaluate Boost candidate libraries strictly on the merit of whether or not I personally can use this library for my own projects.