Re: Copying a container on function call... (Was Re: return_stl_iterator acting as const?)

John Smith <[email protected]>
Newsgroups gmane.comp.lang.lua.bind.user
Message-ID <[email protected]>
Thank you, that worked with a newly created  'return_stl_iterator_pointer'
policy.

On Thu, Mar 5, 2009 at 12:46 AM, Daniel Wallin <[email protected]> wrote:

> John Smith wrote:
> > Well another 2 days on this and still no closer to figuring it out...  I
> > tried to wrap a custom iterator around the class:
> >
> [...]
> > I'm really amazed that it is so difficult, and no one seems to know how
> to
> > pass a vector of objects to LUA and have LUA modify member variables of
> > those objects.  It would seem to be the type of problem that luabind was
> be
> > designed to solve.  However every example I can find on the web, the only
> > use of a container of objects is to read the values not modify them.  So
> I'm
> > completely at a loss here...
>
> Unfortunately it can't be done with "return_stl_iterator". That policy
> is awful and really needs to be redone properly, but in the meantime the
> simplest solution would be to create a new policy using the code in
> iterator_policy.hpp, and change the line that says:
>
>    convert_to_lua(L, *self->first);
>
> to
>
>    convert_to_lua(L, &*self->first);
>
> or
>
>    convert_to_lua(L, boost::ref(*self->first));
>
> That should do it.
>
> --
> Daniel Wallin
> BoostPro Computing
> http://www.boostpro.com
>
>
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