Re: Confessions of an "OO Foreigner"

From: William M. Klein (wmklein_at_nospam.netcom.com)
Date: 12/30/03 

Date: Tue, 30 Dec 2003 06:31:04 GMT

FYI - if you want to use the "returned value" from an object reference/method,
you MAY use the

    Move object-reference::method-name (param-n)

syntax (called "inline object reference") 

-- 
Bill Klein
 wmklein <at> ix.netcom.com
"William M. Klein" <wmklein@nospam.netcom.com> wrote in message
news:Rw7Ib.11392$lo3.2690@newsread2.news.pas.earthlink.net...
> Donald,
>   When you can use that syntax is "medium" restricted.  The following is from
> the Standard:
>
> "8.4.2.9 Object property
> Object properties provide a special syntax to get information out of and pass
> information back into an object. The mechanisms for accessing object
properties
> are get property methods and set property methods. A get property method is a
> method explicitly defined with the GET PROPERTY phrase or a method implicitly
> generated for a data item described with the PROPERTY clause; a set property
> method is a method explicitly defined with the SET PROPERTY phrase or a method
> implicitly generated for a data item described with the PROPERTY clause."
>
> -- 
> Bill Klein
>  wmklein <at> ix.netcom.com
> "Donald Tees" <donald_tees@nospam.sympatico.ca> wrote in message
> news:Y86Ib.4166$Vl6.1073088@news20.bellglobal.com...
> > LX-i wrote:
> > > (there is a reply down there somewhere....)
> > >
> > > William M. Klein wrote:
> > >
> > >>    INVOKE  specific-object-reference-data-item   specific-method-name
> > >>                 USING  various-parameter-by-CONTENT/REFERENCE/VALUE
> > >>                 RETURNING returned-value-data-item
> > >>
> > > ...
> > >
> > >>    INVOKE method-name UPON object-reference-name USING ...
> > >>
> > >> Well, I lost <G> that battle and we ended up with INVOKE
> > >> object-reference.  Once
> > >> we had "object-reference" as the object (grammatical usage) of the
> > >> INVOKE verb,
> > >> then I though we AT LEAST should have an OPTIONAL keyword explaining
> > >> "what"
> > >> (adverbial) we wanted to do with this "second" thing, the
> > >> method-name.  What I
> > >> wanted was something like
> > >>
> > >>   INVOKE object-reference <WITH>  method-name USING ....
> > >>
> > >> Well, I lost <G> that battle and we ended up with two "nouns"
> > >> following the
> > >> INVOKE verb - with two VERY different meanings and no preposition
> > >> between them.
> > >> As far as I know, this is the ONLY time this exists in COBOL (which is
> > >> English
> > >> like) and totally (IMHO) obscures what the INVOKE statement does!!!
> > >
> > >
> > > I'm with you.  Other languages use something like
> > >    return-value = object.method(parameters)
> > >
> > > I'm surprised they didn't say
> > > INVOKE method-name OF object-name ...
> > >
> > > This utilizes a very familiar COBOL construct, which is used to uniquely
> > > identify data items.
> > >
> > > Any of you savvier OO guys know of a reason that that wouldn't make more
> > > sense?
> > >
> > >
> >
> > In reply to that latter, you can do exactly that by using the set
> > property method to invoke a procedure.
> >
> > IE MOVE "action-required" TO INVOCATION-METHOD of object-name.
> >
> > Donald
> >
>
>

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