Re: [boost] Yap's formal review is starting now!

Zach Laine wrote:

If someone else wants to navigate MSVC's limitations and submit patches, I'll switch over to std::tuple in the interface, and maintain that work.

There's the option of stating everything in terms of boost::yap::tuple instead, which today would be an alias to hana::tuple. It's questionable exactly how much this will help users in the event of moving to std::tuple, but it might be possible for at least some user code to not need changes. On a completely unrelated note, have you considered the use case in which an expression supports two separate modes of evaluation? yap::evaluate doesn't take a "mode" parameter, and the way it's specified makes it hard to extend it with one.