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Re: struct question


From: Dmitri A. Sergatskov
Subject: Re: struct question
Date: Wed, 28 Jan 2004 00:48:37 -0700
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115

Paul Kienzle wrote:
I've implemented a more complete version of struct for 2.1.52
(it handles struct arrays).  Let me know if you backport it to 2.1.50.

Well, I decided to get in with times and installed octave-2.1.53.
I was having hard time compiling the latest octave-forge with it.
mex bombs:


mex.cc: In member function `mxArray* mxArray::field(const std::string&, int)
   const':
mex.cc:377: error: no match for 'operator[]' in '*this->mxArray::pmap[key]'
mex.cc: In member function `void mxArray::field(const std::string&, int,
   mxArray*)':
mex.cc:383: error: no match for 'operator[]' in '*this->mxArray::pmap[key]'
mex.cc: In member function `mxArray* mex::make_value(int, int, const
   string_vector&)':
mex.cc:551: error: call of overloaded `assign(std::string, octave_value_list&)'
   is ambiguous
/usr/local/include/octave-2.1.53/octave/oct-map.h:123: error: candidates are:
   Octave_map& Octave_map::assign(const std::string&, const octave_value&)
/usr/local/include/octave-2.1.53/octave/oct-map.h:125: error:
   Octave_map& Octave_map::assign(const std::string&, const Cell&)
make: *** [mex.o] Error 1


I do not care about it that much so I NOINSTALLed it.

Another problem is listen in main/miscellaneous:

listen.cc: In function `void process_commands(int)':
listen.cc:331: error: `bind_global_error_variable' undeclared (first use this
   function)
listen.cc:331: error: (Each undeclared identifier is reported only once for
   each function it appears in.)
listen.cc:347: error: `clear_global_error_variable' undeclared (first use this
   function)
listen.cc: In function `octave_value_list Flisten(const octave_value_list&,
   int)':
listen.cc:564: error: no matching function for call to `unwind_protect::
   save_bool(int*, int&)'
/usr/local/include/octave-2.1.53/octave/unwind-prot.h:103: error: candidates
   are: static void unwind_protect::save_bool(bool*, bool)

I do not care for 'listen' either (at least now), but I do for some other stuff 
in misc.
(dispatch e.g.). I commented out  'listen' from Makefile and after that it
went through. (I would think that dispatched should be moved to some other 
directory
from misc since it is essential for octave forge, while many other programs
there are truly optional.)

Struct works now:
octave:1> s=struct('a',1,'b',2,'c',3)
s =
{
  a = 1
  b = 2
  c = 3
}
I thought that struct array refer to things like
s(2,1)=struct('a',1,'b',2,'c',3)
which seems to be working as well now.

Sincerely,

Dmitri.




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