callable_traits
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[review] revisit apply_member_pointer
apply_member_pointer seems to be trying to do too much. I can get a pointer to member data of any type, unless that data member is itself a pointer to member or a pointer to function, in which case I get something else entirely. Additionally, the description doesn't mention that PMDs also get special handling.
from http://lists.boost.org/Archives/boost/2017/04/234173.php
Is it useful at all? Should it be split into multiple traits, or removed entirely? What was the rationale for the current design?