C++ template; partial specialization implementation -

given template class single parameter, can define implementation specific specialization:

template<int n> struct foo {     foo( ); };  foo<2>::foo( ) { //works (on ms visual 2012, though it's not correct form) }

for multiple parameter template, possible define implementation partial specialization?

template <class x, int n> struct bar {     bar( ); };  template <class x> bar<x,2>::bar( ) { //error }

for partial specializations, need first define specialization of class template before can go defining members:

template <class x, int n> struct bar {     bar(); };  template<class x> struct bar<x,2> {     bar(); };  template <class x> bar<x,2>::bar( ) { }

the correct form first 1 said works is:

template<int n> struct foo {     foo( ); };  template<> foo<2>::foo( ) { //works }

Detect