Remove std::binary_function dependency

[CayOest]

Good evening!

I am moving our QL + OH + QLAddin to C++17. It seems that std::binary_function (https://en.cppreference.com/w/cpp/utility/functional/binary_function) used in oh/iless.hpp is deprecated since C++11 and deleted since C++17.

Would it be possible to remove the inheritance from the official code as well?

• For instance, by some macro defined in ohdefines.hpp
• Or by __cplusplus macro (This has been added to VS only recently, though).

Thanks and kind regards!

Cay