Does anyone know whether, in C++11, function templates can be partially specialized?
No, they can't. The draft C++0x standard has a section (14.5.5) on class template partial specialisations, but no mention of function template partial specialisations.
Lightness Races in Orbit
No; they were proposed as core language issue #229 (from n1295) but ultimately rejected (and quite rightly so, since overloading does the job).
来源：https://stackoverflow.com/questions/3716799/partial-specialization-of-function-templates