Re: [F-Script-talk] Methods in F-Script.

[Marcel W. <ma...@me...>]

Hi Todd!

On 14 Jul 2005, at 02:07, Todd Blanchard wrote:

> Huh, seems like a theme.

Sure does! :-)

> I've been working on an app based on integrating the following  
> components:
>
> CoreData - basic object modeling and persistence
> CLIPS - see http://www.ghg.net/clips/CLIPS.html - constraints/ 
> intelligence/rules
> FScript - actions and predicates from CLIPS.

Well, one of the motives for developing Objective-Smalltalk is to act  
as a "language workbench", so that it becomes possible to define, for  
example, sublanguages.  One I've done just recently is a very simple  
one-way constraint solver, which adds just 280 lines of code to the  
project because it can reuse capabilities of the base system.

One of the motivations for ObSt was the realization that things like  
script languages, constraint systems, rule-systems, DSLs etc. are  
actually very similar, and can be expressed as differences in a few  
key concepts (this was later confirmed by "Concepts, Techniques, and  
Models of Computer Programming", http://www2.info.ucl.ac.be/people/ 
PVR/book.html  ).  And what's great for capturing such differences?   
Yup.

Instead, we typically have these fairly monolithic beasts that we  
then have to yoke together, but after writing a couple of bridges  
myself I got a bit tired of that, it seemed quite wasteful and was  
never really satisfactory.

Marcel