1 namespace AStuff{
 2 template<typename T>
 3 class A
 4 {
 5 public:
 6 void swap(A *other)
 7 {
 8 using std::swap;
 9 swap(pImpl,other.plmpl);
10 }
11 private:
12 AImpl  *pImpl;
13 };
14 template<typename T>
15 void swap(A<T> &a,A<T>&b)
16 {
17 a.swap(b);
18 }
19 }
 
20 
21 template<typename T>
22 void dosomething(T &a,T&b)
23 {
24 using std::swap;
25 swap(a,b);
26 }