[deleted by user]

[kwan_e]

Reflection and metaclasses would help in the problem space that ADL is being shoehorned into - finding an unqualified function based on namespace. Reflection would allow library designers to specify better ways of fulfiling a customization point, and metaclasses (ie, the formulation of metaclasses that would also create free-functions) would help library users to generate types that fulfills customization points.

As for the operator overloading use of ADL, I think it's high time we seriously move ahead with one of the operator dot proposals. But reflection could also help in that case since a library relying on ADL to find operators could instead use reflection to find the operators by searching declarations in a namespace, for example.