Re: Patch Re: iterating cell arrays

[Paul Thomas]

R12 is well behaved;

for i = { 'a',  'b' } ; disp(i) ; end

or

x = { 'a' , 'b' } ; for i = x ; disp(i) ; end

behave as they ought to by outputting

'a'

'b'

Paul T

----- Original Message ----- 
From: "David Bateman" <address@hidden>
To: "Stefan van der Walt" <address@hidden>
Cc: <address@hidden>
Sent: Wednesday, June 23, 2004 11:43 AM
Subject: Attn: Patch Re: iterating cell arrays


> Trivial... Consider the patch at the end of this mail. This version
> just iterates through all elements of an ND Cell array. It might be
> better to also extract sub arrays of the ND Cell array, like what is
> done for matrices in a for statement. The version of Matlab R12 I
> have access to does wierd things in this case, so unless someone
> want to check the behaviour against a later version of matlab, I
> think the version below is pretty much the best that can be done.
>
> Cheer
> D.
>
> *** src/pt-loop.cc.orig 2003-10-28 22:07:59.000000000 +0100
> --- src/pt-loop.cc 2004-06-23 11:34:32.000000000 +0200
> ***************
> *** 392,397 ****
> --- 392,405 ----
>         break;
>     }
>         }
> +     else if (rhs.is_cell ())
> +       {
> + Cell c_tmp = rhs.cell_value ();
> + dim_vector dv = c_tmp.dims ();
> + int steps = dv.numel ();
> +
> + DO_LOOP (c_tmp (i));
> +       }
>       else
>         {
>   ::error ("invalid type in for loop expression near line %d, column %d",
>
>
>
>
>
> According to Stefan van der Walt <address@hidden> (on 06/23/04):
> > How difficult would it be to implement iterating cell arrays?
> >
> > I.e.
> >
> > for i = {'one','two','three'}
> >   ...
> > end
> >
> > Regards
> > Stéfan
>
> -- 
> David Bateman                                address@hidden
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>
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