Thanks :)

Hannes Hirzel wrote:
> 
> On Tue, 26 Feb 2002, Robert Hirschfeld wrote:
> 
> > A while ago I started to work on AspectS, an environment to explore
> > aspect-oriented programming (AOP) in dynamic systems like Squeak
> > (http://www.prakinf.tu-ilmenau.de/~hirsch/Projects/Squeak/AspectS/).
> 
> I downloaded your preconfigured image and looked into it. The tip by Jim
> Benson that he used your work on aspect oriented programming motivated me
> to do this.
> 
> And I'm excited! Your AspectS work gives an easy way to look at the system
> from different points of views (well - aspects) with the standard tools.
> That's very nice! The examples you provide are easy to use. Even if one
> doesn't want to go into the details of aspects, joint-points and advice.
> 
> Just to take the example which shows how to dynamically add test code on
> all the #mouseEnter: and #mouseLeave: messages and do an analogous one for
> other messages is very revealing! This allows to tackle the 1000 method
> monster class #Morph!
> 
> (The example shows how to monitor all the 22 implementors of #mouseEnter
> and the 19 implementors of #mouseLeave in the class #Morph and its
> subclasses very easily)
> 
> > AspectS can also be used to implement roles/perspectives. One of the
> > differences between mixins/MI and aspects is that instead of letting
> > a set of classes decide from where to inherit additional behavior,
> > the aspect is responsible for adjusting existing behavior in or
> > distributing additional behavior to target objects. It is just the
> > other way around. Aspect instances in AspectS are regular objects
> > that can change the behavior of objects in the image (all instances
> > of a class or just specific ones) and revert the effects they caused
> > anytime needed.
> 
> I understand that these aspects are not actually limited for looking
> at the system in various new ways but as well use it for new
> implementation strategies.
> 
> After the roles/perspectives discussion in another thread I'm pleased to
> see that we already have intersting tools available that are easy to use.
> 
> > I've updated a paper that describes AspectS in more detail:
> > http://www.prakinf.tu-ilmenau.de/~hirsch/Projects/Squeak/AspectS/Docs/AspectS_20020222.pdf
> 
> I read the paper although not yet thoroughly. It is a bit terse for
> somebody not having followed the discussion on aspect oriented programming
> in the last years. However for many readers it will be just to the point.
> 
> > At http://www.prakinf.tu-ilmenau.de/~hirsch/Projects/Squeak/AspectS/
> > there are a change set and a pre-loaded image that might better explain
> > what I've tried to describe in the paper...
> 
> I can recommend anybody to look at the pre-loaded example image with the
> example do-its.
> 
> > Best,
> > -Robert
> 
> To sum up:
> Danke schoen! (Thank you).  In particular that you kept updating it.
> This is an excellent work!
> 
> Regards
> Hannes Hirzel