Placing structs in cell arrays

[John W. Eaton]

On 12-Feb-2007, John Swensen wrote:

| I am having trouble placing a struct/Octave_map in a cell array in C++.  
| Here is a snippet of my code.
| 
|         Matrix handleVec = args(0).matrix_value();
|         Cell retval(num_handles);
|         for( int i = 0 ; i < num_handles ; i++ )
|         {
|             handlePtr = handle::getHandle( (int)handleVec(i) );
|             Octave_map retvalItem = handlePtr->generateStruct();
|             octave_stdout << "BEFORE" << endl;
|             retval(i) == octave_value(retvalItem);
|             octave_stdout << "AFTER" << endl;
|         }

I don't think I understand precisely what it is you are trying to do,
but if you are trying to return a cell array containing a structure as
one of its elements, then maybe the following example will help.  It
works for me.

  #include <octave/oct.h>
  #include <octave/oct-map.h>

  DEFUN_DLD (foobar, , , "")
  {
    octave_value retval;

    Octave_map m;
    m.assign ("a", 1.0);
    m.assign ("b", 2.0);
    m.assign ("c", 3.0);

    Cell tmp (10, 1);
    tmp(0) = m;

    retval = tmp;

    return retval;
  }

jwe