any -> void*

From: Mark Rodgers (mark.rodgers_at_[hidden])
Date: 2000-11-07 13:42:54

I have to say that I feel pretty strongly that any should lose
this conversion.  It allows comparisons of anys and IMHO that is
a very Bad Thing.

Programmers don't read documentation.  If programmers want to 
know if comparisons of anys work, they will most likely write a 
comparison and compile it.  If it compiles it will be assumed to 
work.  Only after hours of debugging will they discover that 
their set of anys was a bad idea.  At that point they will curse
boost as a bunch of fools, and trying to suggest they should
have read the documentation wouldn't change this opinion.

We can avoid this unhappy situation if we just remove the void* 
conversion and replace it with a function to test emptiness.

Mark