RE: [boost] Re: safe_bool alternative?

From: Douglas Paul Gregor (gregod_at_[hidden])
Date: 2003-11-25 11:24:41

On Tue, 25 Nov 2003, Sam Partington wrote:
> I've been playing with the idea of selecting from either implementation as
> suitable :
[snip]
> template<class T, class B = ::boost::detail::empty_base>
> 	class the_bool_testable :
> 		public select_bool_impl<safe_bool<T, B>,
> 						bool_testable<T, B>,
> 						boost::is_convertible<T,
> int>::value
> 						>

This can't work, because it's impossible for the type T to be defined, so
is_convertible<T, int> won't give a meaningful result.

        Doug