Re: Updating a variable

[Juan Pablo Carbajal]

On Wed, Jan 18, 2012 at 6:47 AM, witham <address@hidden> wrote:
> I believe this will be very simple, but I don't see what to do. I couldn't
> find anything in Octave FAQs about this. Why isn't A being updated?
>
>>> d=1
> d =  1
>>> A=d*8
> A =  8
>>> d=2
> d =  2
>>> A
> A =  8
>
> A stays = to 8, why doesn't it change to 16? How can I get it to change to
> 16?
>
> Thanks.
>
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Hi,
When you do
A = d*8
The variable A stores the value of the result. It is not linked to d
in anyway. To produce such behavior you could define A as a function
of d, for example

> A =@(x)x*8

Then
> d = 1;
>A(d)
ans = 8
>A(3)
ans = 24

etc...

-- 
M. Sc. Juan Pablo Carbajal
-----
PhD Student
University of Zürich
http://ailab.ifi.uzh.ch/carbajal/