Making a class template declared in an outer anonymous namespace a friend...

How can I access a private (non-static) method in C++?...

How to read in doubles from a text file in a more efficient way?...

field 'obj' has incomplete type note: forward declaration of 'class B'...

Why C++ friendship for function inside a class does not work same as a standalone function?...

Template specializations in friend declarations post C++20...

Explicit template instantiation of templated friend of templated class in C++...

How can I fix a C++20 compile error involving concepts and friends?...

Friend template overloaded operator <<: unresolved external symbol...

c++ friend function - operator overloading istream >>...

Refactoring : delegate friendship in sub-functions...

How to grant friend class access to value of modified member...

Can a base class and a derived class of that base class have a common friend class which is a friend...

Making default constructor private in Qt custom object...

Invoke overridden virtual methods of a derived class without exposing them...

Is it required to define all forward declarations?...

Will friend injections be ill-formed?...

Redefinition error when defining friend function inside class template...

How can I make a typedef or alias for a template function that can also be used in friend function d...

Can't access private member in templated overloaded operator...

Generic friend operator== overload...

Friend function have no access to struct member declared in class template...

Allowing access to protected member function for class outside of namespace...

Friending a typedef-ed class (c++)...

Accessing private member values with external template function...

Global scope friend operator declaration when class in namespace and using templated type as return ...

C++ template-id does not match any template...

How to split definition and declaration with friend function and inheritance...

Friend class in C++ not allowing access to private member attributes...

warning defining friend operator declared inside a namespace...