template friend class

[Disch]

I have a template class who needs to be friends of all other classes made from that template.

ie: MyClass<int> needs to be friends with MyClass<float>... however because this is a template that will be used with many user-defined types I can't just list all the possible friends in the class.

I tried following stuff, none of which worked:

template <typename T>
class MyClass
{
friend class MyClass;    // 'MyClass' already friends with itself
friend class MyClass <>; // wrong number of template arguments

template <typename TT> friend class MyClass<TT>;
    //partial specialization 'MyClass<TT>' declared 'friend'
};

Is this possible?

Thanks in advance


-- [ EDIT ]--

of course it's the one thing I didn't try:

template <typename T>
class MyClass
{
  template <typename TT> friend class MyClass;  // not MyClass<TT>
};

Seems so obvious now. Thanks

[jsmith]

It should already be friends without having to make any additional declarations.

yup, so you're right now that i tried it.

[Disch]

nah -- because MyClass<int> and MyClass<float> are two seperate classes -- they're not friends with each other by default.