Custom swap in std namespace

[Marcin Kalicinski]

Is it well formed C++ to define free swap function for my custom container
in std namespace?

cheers,
Marcin

 

[Victor Bazarov]

Is it well formed C++ to define free swap function for my custom container
in std namespace?

Yes. You are allowed to _specialise_ any of 'std' templates for your
particular types.

V

 

[red floyd]

Yes. You are allowed to _specialise_ any of 'std' templates for your
particular types.

V

So, the first of the following two functions is OK, but not the second,
since the second is an overload and not a specialization?

class MyClass;

namespace std {
template<>
void swap<MyClass>(MyClass&, MyClass&);
}

namespace std {
void swap(MyClass&, MyClass&);
}