Thanks for the explanation Brett.
I can't wait no more my Official Guide. I hope I can find easy examples on
this matter inside it!
Carlos Lorenz
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Domingo, 20 de Agosto de 2000 22:15
Subject: [REBOL] Objects Re:
> "Objects provide a way to group a set of values into a context that can be
> passed around as a whole and treated as a single value. This is useful for
> dealing with structures that are more complex in nature, as they allow the
> data and code to be kept together (encapsulated).
>
> Once created, an object can be treated as a single value. It can be passed
> to a function as an argument, returned from a function as a result, or set
> to a word. The values within the object are accessed by name. "
>
> That was from the user guide.
>
> Objects help to structure scripts.
>
> Think of how useful local variables are in functions. You create a local
> variable, use it and know that it will not clash with words outside of the
> function*. Objects give you local variables and local functions packaged
> together into one blob. Now that is useful. The local functions can see
the
> local variables and the other local functions and be like a mini-program
> embedded inside a bigger one.
>
> Before I get clouted for using confusing terminology - the guide refers to
> these as "fields" or "instance variables" and "object functions".
>
> Here's an example, when I've been programming using the parse function, I
> can end up with quite a few parse rules and other variables related to
> parsing. It might be that I want my parsing functionality to be part of a
> bigger script - so it would be good to put everything related to parsing
> (rules, flags, functions) in one spot - an object. Doing this makes my
> overall script more readable since I know that everything in that
particular
> object relates to the parsing functionality. Also, it simplifies the my
> naming of words and prevents naming clashes with global words. It sort of
> like having work areas of a factory floor painted with coloured safety
lines
> in order to separate hazardous machines or processes.
>
> As the guide mentions another use for objects is for structuring your
data.
> You can create a special data structure with functions to manipulate it
and
> put these in an object. So you can have object functions that add and
remove
> values from your data structure and be comforted to know that the object
is
> making sure the structure is always mainted properly.
>
> Brett.
>
> * Unless you have done something quite tricky - but let's leave that for
> now.
>
>
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, August 21, 2000 7:05 AM
> Subject: [REBOL] Objects
>
>
> > What benefit is there to make object!. I have not discovered the
> usefulness
> > of this yet unless its just to access, thru refinements, the individual
> > values within. Is there a bigger picture that I am missing?
> >
> > Paul Tretter
> >
>
>
