Re: [Boost-users] Problem with type traits

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-07-21 12:29:53

AMDG

David Abrahams wrote:
>> What is the proper way to handle this? Below is my structure:
>>
>> template< typename t_type >
>> struct is_sink
>> {
>>     typedef typename boost::mpl::or_<
>>         vfx::io::is_device<t_type>,
>>         boost::is_same<t_type, vfx::io::Sink>
>>     > type;
>>     
>        ^
> missing "::type" here? Otherwise, the "typename" above is probably illegal
>   

typename is legal because the or_ is qualified.  It doesn't matter
that boost::mpl is a namespace.  (Don't you just love these intuitive rules)

In Christ,
Steven Watanabe