C++11 style SFINAE and function visibility on template instantiation

Question

I\'m not sure if this has anything to do with sfinae, or just something thats relevant for any templated function. I am attempting to use sfinae to enable/disable a member f

Answer 1

This has nothing to do with SFINAE or templates or C++11 or ADL.

A member shadows all non-members with the same name, regardless of type. If you have a member named f, you cannot refer to any non-member named f, unless you use a qualified name (e.g. ::f).

Just use ::f(*this, t);.