Questions about templates and headers

Question

The compiler says that it cannot find the link for the function when I do this:

// link.h
template <class T>
    T *Link(T *&, T *(*)())

// link.cpp
template <class T>
T c:Link(T *&ChildNodeReference, T *(*ObjectCreator)()){

}

If I implement inside the class in the title, it goes smoothly.

Please, I will work on the headline until someone enlightens me about this.

There is something in C ++ that is strangely annoying. I know there is a reason for this, etc. Even so, can compilers help you about this? _ "

Answer 1

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Answer 2

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struct t1 {
  template <int>
  struct a {};
};

struct t2 {
  enum { a = 123 }; 
};

enum { b = 456, c = 789 };

template <class T>
void foo() {
   T::a<b>c;
}

, foo<t1>(), , t1::a :

T::a<b> c;

foo<t2>(), , t2::a :

(T::a < b) > c;

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// link.h
export template <class T>
T *Link(T *&, T *(*)());

// link.cpp
export template <class T>
T *Link(T *&ChildNodeReference, T *(*ObjectCreator)()) {
}

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Answer 3

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Answer 4

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Answer 5

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T *c:Link(T *&ChildNodeReference, T *(*ObjectCreator)())
{
}

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