14 Sep
2017
14 Sep
'17
2:56 p.m.
Robert Ramey wrote:
BOOST_NO_CXX17_STD_IS_DETECTED
According to http://en.cppreference.com/w/cpp/experimental/is_detected
it's currently in
as part of library fundamentals v2. I had mistakenly thought it was slated for C++17. So maybe it's not appropriate to include in Boost.Config yet.
The usual practice for such additions is to add boost::is_detected into Boost.TypeTraits, obviating the need for a Config check and each library providing its own fallback. Or, you can use mp_valid from Mp11 instead, although it's not a drop-in replacement.