Re: [boost] New, powerful way to use enable_if in C++0x

Subject: Re: [boost] New, powerful way to use enable_if in C++0x
From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2011-04-13 13:17:06

Den 13-04-2011 10:14, Daniel Frey skrev:
> On 11.04.2011, at 20:15, Matt Calabrese wrote:

> That's really nice, but I think the syntax might be improved. How
> about adding a ::value to enable_if (and the other templates) to
> allow your example to look like this:
>
> template<  class... T, bool = boost::enable_if_c<  sizeof...( T ) ==
> 10>::value> test( T&&... );
>
> template<  class T, bool = boost::enable_if<  boost::is_arithmetic<
> T>  >::value> operator T() const;
>
> etc.? Get rid of typename, *&, boost::enabler and if you like, you
> can write 'bool Enabled = ...' instead of 'bool = ...' to be more
> verbose in your code.

Hm. Why not

template< class T, BOOST_ENABLE_WHEN( boost::is_xxx<T> ) >

?

-Thorsten