[Boost-users] Casting this pointer to a number

From: sj_at_[hidden]
Date: 2008-01-13 09:40:51

Hello,

I'd like to provide a function with an unique identifier:
void f(size_t UniqueId);

This function is going to be called from within class member functions  
like that:
class a {
a() { f((size_t)this); }
};

Right now the old style cast works. The question is how do I make  
conversion using numeric_cast? If I use:
f(boost::numeric_cast<size_t>(this));
I get a compilation error:
error C2665: 'ceil' : none of the 3 overloads could convert all the  
argument types

I guess another question is: should I bother replacing this old-style  
cast, maybe there is a better way to approach this situation in general?

Thanks.