Re: [boost] Is there any interest in a casting library where you don't need to specify a type of receiver?

From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2007-11-09 03:38:36

On Nov 9, 2007 2:06 AM, Sergey Shandar <sergey_at_[hidden]> wrote:
> [...]
> 3. I found this one today:
>
>     template<class T>
>     operator T &() const
>         throw(typename ::boost::disable_if< ::boost::is_same<T, MyClass
> const> >::type *)
>

Wow! Does this really work? You can really apply SFINAE to conversion
opreators by
(ab)using the exception specification? Is this only a gcc thing or is
it "by the standard"?

If the latter, boost::enable_if documents might need to be updated :)

--
gpd