Re: [Boost-users] [mpl] how to find out whether a function is implemented

From: David Abrahams (dave_at_[hidden])
Date: 2005-08-04 10:08:26

Zeljko Vrba <zvrba_at_[hidden]> writes:

> I hope the MPL label is right. At least the question has *some*
> relevance to metaprogramming.
>
> Basically, I need to find out whether a certain function F over a
> certain type is defined, and if yes, take its address.

I can help you with the first part:

  http://www.boost-consulting.com/boost/boost/detail/is_incrementable.hpp

shows an example determining if ++x is defined.

However, reliably taking the address of an overloaded function
involves knowing the exact types in its signature.  I'm not sure how
you can do that.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com