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Octave's cell type is equally accessible within oct-files. A cell
array is just an array of octave_values, and so each element of the cell
array can then be treated just like any other octave_value. A simple
example is
/*
Copyright (C) 2007 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <octave/oct.h>
#include <octave/Cell.h>
DEFUN_DLD (celldemo, args, , "Cell Demo")
{
octave_value_list retval;
int nargin = args.length ();
if (nargin != 1)
print_usage ();
else
{
Cell c = args (0).cell_value ();
if (! error_state)
for (octave_idx_type i = 0; i < c.nelem (); i++)
retval(i) = c.elem (i);
}
return retval;
}
Note that cell arrays are used less often in standard oct-files and so
the Cell.h header file must be explicitly included. The rest of this
example extracts the octave_values one by one from the cell array and
returns be as individual return arguments. For example consider
[b1, b2, b3] = celldemo ({1, [1, 2], "test"})
=>
b1 = 1
b2 =
1 2
b3 = test