Dan Nuffer <[EMAIL PROTECTED]> writes: > David Abrahams wrote: >> Dan Nuffer <[EMAIL PROTECTED]> writes: >>>6. How can I get python indexing and slicing to work on OW_String? I >>>couldn't see any information about this in the docs. >> The same way you do it in Python: supply a "__getitem__" and a >> "__getslice__" method. >> > > > Thanks, this works great! > > > >> >>>7. Do I need to expose the copy constructor and assignment operator >>>via Boost.Python? >> You don't need assignment at all, and the copy constructor is exposed >> automatically unless you have specified that your class is >> noncopyable. You may want to build a copy() method, as Ralf suggests >> we ought to do automatically in >> http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1386367 (I'm now >> beginning to think we should just generate copy() automatically). >> > > > I'm not quite sure what I'm doing here. I couldn't find an example > that does this. This doesn't compile: > .def("copy", init<const OW_String&>()) > > This doesn't work: > > OW_String OW_String_copy(const OW_String& s) > { > return s; > } > > ... > .def("copy", &OW_String_copy) > > >>> t = copy.deepcopy(s) > Traceback (most recent call last): > File "<stdin>", line 1, in ? > File "/usr/local/lib/python2.2/copy.py", line 182, in deepcopy > y = _reconstruct(x, reductor(), 1, memo) > File "/usr/local/lib/python2.2/copy.py", line 305, in _reconstruct > args = deepcopy(args, memo) > File "/usr/local/lib/python2.2/copy.py", line 186, in deepcopy > y = copierfunction(x, memo) > File "/usr/local/lib/python2.2/copy.py", line 226, in _deepcopy_tuple > y.append(deepcopy(a, memo)) > File "/usr/local/lib/python2.2/copy.py", line 182, in deepcopy > y = _reconstruct(x, reductor(), 1, memo) > File "/usr/local/lib/python2.2/copy_reg.py", line 57, in _reduce > raise TypeError, "can't pickle %s objects" % base.__name__ > TypeError: can't pickle instance objects > > How am I supposed to do this?
Hmm, I'm not sure. Oh, probably you need to do something to make your instances pickleable as well: http://www.boost.org/libs/python/doc/v2/pickle.html Ralf's the expert in this area... -- David Abrahams [EMAIL PROTECTED] * http://www.boost-consulting.com Boost support, enhancements, training, and commercial distribution _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
