Template class as friend

[Boni]

Dear all,
ist it possible to have a template class or func as friend of other class:
Folowing returns syntax errors
template< typename T> class test{};

template< typename T> int func (Ta);

class A{

friend class test;

friend int func (???);

}

[Carl Daniel [VC++ MVP]]

Boni wrote:

Dear all,
ist it possible to have a template class or func as friend of other
class: Folowing returns syntax errors
template< typename T> class test{};

template< typename T> int func (Ta);

class A{

friend class test;

friend int func (???);

}

It depends. Do you want all instantiations of the template to be friends of
A, or just a particular instantiation?

If you want all instantiations::

template <class T> friend int func(T a);
template <class T> friend class test;

If you want just a particular instantiation:

friend class test<A>; // ... or whatever instantiation you want
friend int func<A>(A a); // ... as above

-cd

[Boni]

Thanks a lot.
"Carl Daniel [VC++ MVP]" <cp*****************************@mvps.org.nospam >
schrieb im Newsbeitrag news:uC**************@TK2MSFTNGP12.phx.gbl...

Boni wrote:

Dear all,
ist it possible to have a template class or func as friend of other
class: Folowing returns syntax errors
template< typename T> class test{};

template< typename T> int func (Ta);

class A{

friend class test;

friend int func (???);

}

It depends. Do you want all instantiations of the template to be friends
of A, or just a particular instantiation?

If you want all instantiations::

template <class T> friend int func(T a);
template <class T> friend class test;

If you want just a particular instantiation:

friend class test<A>; // ... or whatever instantiation you want
friend int func<A>(A a); // ... as above

-cd