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Tip of the Day
Language: C++
Expertise: Advanced
Nov 19, 1998

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


A Pointer to Member Cannot Refer to a Static Member Function

It is illegal to assign the address of a static class member to a pointer to member. However, you can take the address of a static member function of a class and treat it as if it were an external function:
 
class A { 
public:
	static  void f();
};
void main() {
	void (*p) () = &A::f; //OK, p is an ordinary pointer to function
}
The secret here is that a static member function is actually an ordinary global function, whose class serves as a namespace.
Danny Kalev
 
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