Passing parameters by reference

[Pete]

I'm not sure whose post you're responding to Bob.  Where do you see
something that amounts to a statement being passed as a referenced
parameter?
Pete

On Mon, Mar 12, 2012 at 3:04 PM, Bob Sneidar <bobs at twft.com> wrote:

> Just weighing in here, that would be a bit confusing. Passing by reference
> means that the command or function has access to the variable passed to it.
> By passing what amounts to a statement, there is nothing for LC to
> manipulate on the other end. Statements have to have some place to put the
> results. In this case, there is no place for LC to put the statement when
> passed by reference.
>
> Even a reference to an element of an array is a statement of sorts. That
> the command is in essence the characters for key delimiters [] doesn't
> change that. The array that is an element in a multidimensional array is
> not itself a container. The array is the container. To work with it you
> have to put it into it's own container then pass the new array by reference.
>
> I hope that makes sense. At least it does to me. :-)
>
> Bob
>
>
> On Mar 10, 2012, at 11:53 AM, Dar Scott wrote:
>
> > Thanks for the tip, Dick, on using the list of keys.  One can think of
> arrays as nested or multidimensional.
> >
> > On Mar 10, 2012, at 1:06 AM, Dick Kriesel wrote:
> >> I agree it'd be good if LC could accept any array reference for
> invoking a handler that specifies pass-by-reference.
> >
> > Though is is probably more work, one might also consider chunks in
> pass-by-reference.
> >
> > Maybe any thing the subtract command can take.
> >
> > However, this might be a problem:
> >
> > doSomethingToTheseTwo char 1 to 2 of it, char 2 to 3 of it
> >
> > command doSomethingToTheseTwo @a, @b
> >       put "butter" into a
> >       put "cheese" into b
> >       put empty into a
> > end doSomethingToTheseTwo
> >
> > That might also have a problem with this call:
> >
> > doSomethingToTheseTwo x, x["t"]
> >
> > I immagine LiveCode folks can come up with a semantics that makes sense
> for weird cases.
> >
> > The subtract command does not have the the problem because it modifies
> only one thing.
> >
> > Dar
> >
> >
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-- 
Pete
Molly's Revenge <http://www.mollysrevenge.com>