Re: An stl list of function pointers

From:
Ulrich Eckhardt <eckhardt@satorlaser.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Wed, 4 Nov 2009 05:19:18 CST
Message-ID:
<dlo7s6-mrl.ln1@satorlaser.homedns.org>
Sam Price wrote:

In my project I want to create a list of functions that I am going to
iterate over and call sequentially.

Im not quite sure how to define an stl list of function pointers.

#include <list>
my best guess that is wrong.
list<void(* functionName)(int id,void *message)> functionList;


One basic up front: If you prefix a declaration (variable or function
doesn't matter) with a typedef, the name used there becomes an alias for
the type of the declaration.

Examples:
   typedef int number;
   typedef int array[10];
   typedef int function();

Now, with that it becomes easy to create a list of function pointers:

   typedef void message_handler(int id, void* message);
   std::list<message_handler*> functionList;

list<void(* functionName)(int id,void *message)> functionList;


   list<void(* )(int ,void * )> functionList;

In other words, the name must not be there when you only need the type. I'm
not sure about the names of the parameters and leave that to the interested
reader to find out. ;)

Uli

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