a general function pointer

[blackbiscuit]

Dear all,

Like void* in C++, it is a general pointer to any kind of data
structure. I wander whether there is a general function pointer, which
can be pointed to any kind of functions without the knowledge of their
signatures?

Thank you very much!

Best Wishes,
Tony

 

[James Kanze]

Like void* in C++, it is a general pointer to any kind of data
structure. I wander whether there is a general function
pointer, which can be pointed to any kind of functions without
the knowledge of their signatures?

Not officially. In practice, void (*)() is often used. In
fact, any pointer to function type will do the job. (Unlike
data pointers, all function pointers are more or less required
to have the same format.)

 

[Pascal J. Bourguignon]

Not officially. In practice, void (*)() is often used. In
fact, any pointer to function type will do the job. (Unlike
data pointers, all function pointers are more or less required
to have the same format.)

Well, not member function pointers. But then you can use boost::bind
or boost::lambda to wrap over them.

 

[blackbiscuit]

Use templates when you need that sort of functionality.

Would you please give me an simple example? Thank you very much!

 

[James Kanze]

Well, not member function pointers.

A pointer to member function is not a pointer to function. The
two are very distinct in C++.