Transcript and Dot Notation

[John Tregea]

I know this has been a long thread, but...

I am not sure how Revolution ISN't already OO? I create groups of objects to
achieve some specific task (during my authoring stage) then during runtime
in the compiled app, I clone that group with the attributes (approx 200 to
300 variable states plus user defined properties), rename it to suitable
name and Voila! OO? No?

Maybe there is more to it from a C++ coders point of view, but I am a H/C
programmer from way back and the addition of user defined attributes in Rev
was a real breakthrough.

Regards

John T

-----Original Message-----
From: use-revolution-bounces at lists.runrev.com
[mailto:use-revolution-bounces at lists.runrev.com] On Behalf Of Dan Shafer
Sent: Monday, February 27, 2006 1:45 PM
To: Mark Brownell; How to use Revolution
Subject: Re: Transcript and Dot Notation

Before Lingo adopted dot notation, it had an intermediate parent-child
"xTalk varietal" approach. I've forgotten now how it worked but I
recall it was hard to learn and very slow.

That may or may not have any bearing on this design, however.


On 2/26/06, Mark Brownell <gizmotron at earthlink.net> wrote:
>
> >On Feb 25, 2006, at 10:59 PM, Scott Kane wrote:
> >
> >>> What do dots enable that
> >>> Transcript does not?
> >>
> >> Properties and methods.
> >
> >Objects can already have properties, and methods as well. They can't
> >have _inherited_ methods -- at least not in the traditional IO sense.
> >An object inherits methods from its enclosing groups/card/stack.
> >
> >And indeed, as I incautiously said in another email a moment ago, I
> >think I could implement something very like class methods using a
> >front script.
> >
> >
> >------------------------------
>
> Perhaps a few of you around here will find this funny, I could do an
implementation of OOPs with a pull-parser.  The trick to creating a child
object is to assign attributes of the parent object to a child object. What
is needed during the birthing process is an allocation of memory to store
the newly incarnated child and to act on it independently while effecting
the parent that can also have global changing effects if desired.
>
> Objects of the element type <parentObject> sets and child objects like
<childObject memLoc="1"> sets or child  objects like <childObject1> &
<childObject2> can be stored in arrays. There could be a function written
with Transcript that uses elements of the parent object to create child
versions that are stored in an array and that are called at memory locations
1, 2, 3, etc.
>
> An example parent object could have attributes for width, hight, color,
category, etc.
>
> <parentObject>
>   <typeObject>field</typeObject>
>   <name>Test Object</name>
>   <width>variable</width>
>   <hight>variable</hight>
>   <loc>variable</loc>
>   <scroll>yes/no</scroll>
>   <title>Parent Object Test</title>
> </parentObject>
>
> A function of birthing a child object would come from attributes found in
the parent object while passing values during creation.
>
> put birthChildObject("Test Object", 200, 300, "21 by 56", yes, "Test Field
One") into pObjectArray[1]. The rule being that elements found in the parent
object are located in the function as a descending order.
>
> There would be support functions that would create the XML, change the
XML, and parse the XML so that methods could be created to interact with the
child objects found in pObjectArray[1]
>
> There could be a function to change a variable value in the width element
to a fixed value that can have a global effect on all child objects. This
would transform the width element in each child or it could have an overall
function of following the parent and ignoring the individual values in each
child.
>
> All that is needed is the ability to perceive or anticipate the parent. So
a completed construct to anticipate known attributes needs to be made
available for type elements. This leaves non-keyword elements for new,
unknown parent objects or elements.
>
> Crazy huh?
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--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dan Shafer, Information Product Consultant and Author
http://www.shafermedia.com
Get my book, "Revolution: Software at the Speed of Thought"
>From http://www.shafermediastore.com/tech_main.html
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