Re: Automatically Combining Structures

[Bill Denney]

> Bill asked
>   Is there a way to automatically combine structures?  What I'm wanting to
>   do is something like:

On Wed, 26 Apr 2006, Przemek Klosowski wrote:

> but it doesn't substitute the _value_ of n, but rather
> just sets s.n, so we need eval to the rescue:
>
> function s=combine(varargin)
> for i=1:nargin
>   a=varargin{i}
>   for [v,n]=a
>     eval(strcat("s.",n,"=v"))
>   endfor
> endfor
> endfunction
>
> So, is there a simpler way to write it?

You actually don't need eval here.  You can use dynamic field names like:

function s=combine(varargin)
for i=1:nargin
  a=varargin{i}
  for [v,n]=a
    s.(n)=v;
  endfor
endfor
endfunction

I didn't know about the ability to iterate over a structure like that 
before this thread though.

Bill

--
Q: "But Herr Mozart, you were writing symphonies when you
were 8 years old."
A: "But I never asked anybody how."
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