Re: [Boost-users] [phoenix] v2 to v3 transition of extension mechanism

Subject: Re: [Boost-users] [phoenix] v2 to v3 transition of extension mechanism
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-04-14 10:02:25

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AMDG

On 04/14/2011 12:45 AM, Thomas Heller wrote:
> 
> Ok, this doesn't work because you are trying to value initialize a reference.
> A small workaround:
> 
>        namespace detail
>        {
>            template <typename T> T make();
>        }
> 
>        // ...
>                template<class Sig>  struct result;
>                template<class This, class Arg, class Cont>
>                struct result<This(Arg, Cont)>{
>                    typedef
>                        decltype(cos(eval(detail::make<Arg>(),
> detail::make<Cont>())))
>                        type;
>                };
>       // ...
> 

Or use boost::declval
(http://www.boost.org/libs/utility/doc/html/declval.html)

In Christ,
Steven Watanabe
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