How do I wirte a .hpp file? (template, friend ,class,overload )?

[maigre_dragon]

//example.h
template <typename T> class C;
template <typename T>
std::ostream& operator<< (std::ostream& os, const C<T>& x); //why ? Must
declare in place!?
//template<typename T> std::ostream& operator<<(std::ostream& os, const
C<char*>& x);
//template<typename T> std::ostream& operator <<(std::ostream& os, const
C<char*>& x);
//
template<typename T>
class C{
public:
//snip
protected:
friend std::ostream& operator<< <T>(std::ostream& os, const C<T>& x);
//why? Must have a <T> before the (std::ostream& os ..) !?
// friend std::ostream& operator<< <char*>(std::ostream& os ,const
C<char*>& x); //instant !? No complied! Why?
// friend std::ostream& operator<< (std::ostream& os, const C<char*>&
x); // overload !? No complied! Why?
private:
//snip
};
//
std::ostream& operator<< (std::ostream& os, const C<T>& x){ //OK! It can
define now!
//snip
}
//special template! No linked! Why?
template<> std::ostream& operator <<(std::ostream& os, const C<char*>& x){
//snip
}
//overload ! No linked! Why?
std::ostream& operator <<(std::ostream& os, const C<char*>& x){
//snip
}
//

[red floyd]

On Dec 28, 5:23 am, maigre_dragon <maigre_dra...@126.com> wrote:
[redacted]

See the FAQ, in particular 5.4, 5.7, and 5.8.

Since there was no question in your post, I'm going to assume the
subject line is your question.

How do you write a .hpp file? With a text editor.

[maigre_dragon]

Thank you. I have found my answer in
http://www.parashift.com/c++-faq-lite/index.html.