Is specializing std::swap deprecated now that we have move semantics? [duplicate]

Answer 1

Is specializing std::swap deprecated now that we have move semantics?

No. This is the generic version, but you can optimize it to skip a third move operation. My preference is to combine copy-and-swap idiom with customizing std::swap for my classes.

That means I will have:

class Aaaa
{
public:
    Aaaa(); // not interesting; defined elsewhere
    Aaaa(Aaaa&& rvalueRef); // same
    Aaaa(const Aaaa& ref); // same
    ~Aaaa(); // same
    Aaaa& operator=(Aaaa object) // copy&swap
    {
        swap(object);
        return *this;
    }
    void swap(Aaaa& other)
    {
        std::swap(dataMember1, other.dataMember1);
        std::swap(dataMember2, other.dataMember2);
        // ...
    }

    // ...
};

namespace std
{
    template<> inline void std::swap(Aaaa& left, Aaaa& right)
    { left.swap(right); }
}