Sannyasin Brahmanathaswami wrote:

> The hierarchical behavior method obfuscates the architecture in the
> sense that it is very hard to see the common parent behaviors that
> are "hiding" behind the other child behaviors.

That's a function of the tool, not a weakness in the language.

The Project Browser shows objects according to their physical location, but I needed something different, a view that showed the full current active message path. So I wrote one I call MPath, and included it in devolution:
<http://fourthworld.net/lc/devo3-mpath.png>

Here's a view with nested behaviors:
<http://fourthworld.net/lc/devo-mpath-nested.png>

devolution is free to use, and available here:
<http://fourthworld.com/products/devolution/index.html>


As for the language, I believe the implementation of behaviors is a good one.

If you need many handlers to define a specific class of objects, what is the spreading them out across multiple scripts?

And if it were possible, what would happen if two (or more) of those scripts contains handlers of the same name?

With the current nesting setup we have the same ability to use multiple scripts to define a single class of objects, but much greater clarity with being able to know which will override/overload others.

Even better, nested behavior scripts can act as sub- and super-classes, with a script defining things for several classes of objects, and each of those providing more specific routines unique to each class.


> p.s. I realize "parent-child" has been deprecated… that still doesn't
> mean, IMHO, it is not the optimal language choice for talking about
> behaviors.

Agreed. Behavior is too generic. The original name of parentScript was more descriptive.

--
 Richard Gaskin
 Fourth World Systems
 Software Design and Development for the Desktop, Mobile, and the Web
 ____________________________________________________________________
 [email protected]                http://www.FourthWorld.com

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