Re: OOP and load/save

[Robert T. Short]

John W. Eaton wrote:
> On 22-Apr-2009, Robert T. Short wrote:
>
> | I have no idea how to cause the constructor to
> | be parsed and executed, but I am sure I can figure this out.
>
> Something like this should work:
>
> DEFUN (doit, args, , "")
> {
>   octave_value retval;
>
>   if (args.length () == 1)
>     {
>       std::string cname = args(0).string_value ();
>
>       octave_value ctor = symbol_table::find_method (cname, cname);
>
>       if (ctor.is_defined ())
>         {
>           octave_value_list result = feval (ctor, 1);
>
>           if (result.length () == 1)
>             {
>               octave_value object  = result(0);
>
>               // do something with the newly constructed object...
>               retval = object;
>             }
>           else
>             error ("call to constructor for class %s failed", cname.c_str ());
>         }
>       else
>         error ("no constructor for class %s", cname.c_str ());
>     }
>   else
>     print_usage ();
>
>   return retval;
> }
>
> Play with it as is, or extract what you need...
>
> jwe
>
>
>   
Not sure I understand at a glance, but thanks and I will work at it.

Bob