Re: boost::bind and the preprocessor

From: vesa_karvonen (vesa_karvonen_at_[hidden])
Date: 2002-03-07 12:59:40

--- In boost_at_y..., "Yitzhak Sapir" <ysapir_at_y...> wrote:
> After having experimented a little with the preprocessor library, I
> was wondering if boost::bind could be implemented in terms of the
> preprocessor library to allow for up to N arguments, defaulting to
> 9. Not that I need anything beyond 3 argument or 4 argument
> functions, but it seems like it'd be a perfect example of its use
> (even if a rather hard one to implement, given bind's current
> complexity and the complexity of writing things in PP).

It should not be very difficult to implement Boost.Bind using the 
preprocessor library.

The problem is the excessively slow preprocessor in the EDG front-end 
which is used in quite a few compilers. In practice, it might be 
necessary to provide preprocessed headers for EDG users, which can 
complicate things quite a bit. Personally I would automate the 
generation of the preprocessed headers in some way (shell script or 
makefile or both).

I don't know what Peter Dimov has in mind, but it would be 
interesting to see Boost.Bind implemented using the preprocessor 
library. Unfortunately I currently don't have the extra time 
to do it.