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Re: Multiple values from a function? [message #20570 is a reply to message #20562]

Tue, 04 July 2000 00:00

meron
Messages: 51
Registered: July 1995

Member

In article <3961EFA8.49657FB6@mathstat.dal.ca>, Simon de Vet <simon@mathstat.dal.ca> writes:
> I have a function that does a whole lot (it started out as an
> independent program). It works very well when returning one of it's
> calculated arrays.
>
> It also produces a number of other arrays which I'd like to have access
> to. Unfortunately, I have discovered that a function can only return
> one value.
>
> How can I get the other arrays out of it? The code is intertwined, so it
> would be hard to break into 2 or 3 independent functions.
>
You can easily return them using keyword parameters. Lets say that
your function FUN calculates 3 arrays (internally known as XARR, YARR
and ZARR) and returns XARR. Then, modify the definition of the
function to something like

Fuction FUN, ... ..., second = yarr, third = zarr

....

return, xarr
end

Now, if you'll issue a call like

u = Fun( .... ,second = v, third = w)

then after the call U will contain the calculated XARR, V will contain
YARR, w will contain ZARR. This can be extended indefinitely. Note
that neither U not V or W need to be defined at all, prior to the
call.

Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"

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[Message index]

		Re: Multiple values from a function? By: John-David T. Smith on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: Simon de Vet on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: Craig Markwardt on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: John-David T. Smith on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: Martin Schultz on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: Simon de Vet on Wed, 05 July 2000 00:00
		Re: Multiple values from a function? By: meron on Tue, 04 July 2000 00:00
		Re: Multiple values from a function? By: Martin Schultz on Tue, 04 July 2000 00:00
		Re: Multiple values from a function? By: Craig Markwardt on Tue, 04 July 2000 00:00

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