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

From: Sergey Shandar (sergey_at_[hidden])
Date: 2007-11-10 07:19:16

shunsuke wrote:
> Sergey Shandar 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 *)
>>     
>
> You've solved the millenium problem! :-)
>
> gcc3.4.5 and 4.1.2 seem to work fine.
> Thanks!
>
>   
Right, here is the new problem: If you specify at least one throw type 
(we do) then you have to specify all possible exceptions for the function!

    template<class T>
    operator T &() const
        throw(typename ::boost::disable_if< ::boost::is_same<T, MyClass const> >::type *)
        throw(::std::exception)
        throw(::MyLibrary::exception)
        throw( what else? )