Re: [luabind] Using functors with Luabind

[Daniel W. <da...@ra...>]

Jason McKesson wrote:
> Is it possible to register a functor with Luabind? Or, more 
> specifically, the contents of a boost::function<> object? So that 
> something like this could work:
[...]
> That really long statement does some functional composition (and believe 
> me, it's not even close to the most complex bit of C++-style functional 
> programming I have written), such that it returns a functor that will 
> take a luabind::object as a single parameter, call GetFloat to fill in 
> the other parameter for DoSomething, and then call DoSomething with the 
> float and object.
> 
> Is it OK to give "def" something like this?

No, I'm afraid not. In theory, the signature could be deduced from
boost::function<>, but it isn't. Some time in the future, something like
this is intended to be used to accomplish what you want:

  def(
      "..."
    , luabind::make_function(
          L, boost::bind(&DoSomething, boost::bind(&GetFloat), _1)
        , mpl::vector2<void, luabind::object>()
      )
  )

But for now you need to write a thin wrapper function.

-- 
Daniel Wallin
da...@ra...
http://www.rasterbar.com