On 02/27/2004 04:52 PM, Brian McNamara wrote:
On Thu, Feb 26, 2004 at 12:04:19PM -0600, Larry Evans wrote: [snip]
If class "C" wants to delegate method "f" to class B, then below is code to do it. I used boost::{lambda,function} rather than FC++ in the example. The basic idea is to get rid of member functions (a recurring motif) in favor of function objects. Annoyingly, you have to pass a pointer-to-the-current-object as an extra argument, which I can't seem to get rid of right now. (Ideas?)
[code snipped] I'm having a hard time understanding what the code does except what amounts to using function pointers (or boost::function objects) instead of methods. The code is dynamic because the function pointers can be updated at any time. Am I missing something? I was wanting something more like section 12.7 of _Design&Evolution of C++_. At first, I guessed that maybe that's what you were doing, but then I wondered why C inherits from B instead of C just contains a B*, as in section 12.7.