Re: [Boost-users] what is template<typename> struct +; ?

Subject: Re: [Boost-users] what is template<typename> struct +; ?
From: Edward Diener (eldiener_at_[hidden])
Date: 2010-01-25 00:16:08

Tan, Tom (Shanghai) wrote:
> While trying to read \boost\fusion adapt_struct.hpp and understand the 
> internals of BOOST_FUSION_ADAPT_STRUCT.
> I came across this code:
> 
>     namespace boost { namespace mpl  \
> 
>     {                                                      \
> 
>         template<typename> \
> 
>         struct +;    \
> 
>                                                                        
>          \
> 
> //….
> 
> }}
> 
>  
> 
> Can  anyone please explain what “ template<typename>   struct +;    “
> 
> means here? I am puzzled how it ever compiles as an operator is used as 
> a class name.

I don't see this in adapt_struct.hpp. Which version of Boost are you 
finding this in ?