What is the practical use of pointers to member functions?

Question

I\'ve read through this article, and what I take from it is that when you want to call a pointer to a member function, you need an instance (either a pointer to one or a sta

Answer 1

Imagine for a second you have a function that could call one of several different functions depending on parameters passed.

You could use a giant if/else if statement
You could use a switch statement
Or you could use a table of function pointers (a jump table)

If you have a lot of different options the jump table can be a much cleaner way of arranging your code ...

Its down to personal preference though. Switch statement and jump table correspond to more or less the same compiled code anyway :)