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            Returns the result type of front.
          
template<typename Seq> struct front { typedef unspecified type; };
Table 1.25. Parameters
| Parameter | Requirement | Description | 
|---|---|---|
| 
                       | A model of Forward Sequence | Argument sequence | 
result_of::front<Seq>::type
Return type: Any type
            Semantics: The type returned by dereferencing
            an iterator to the first element in Seq.
            Equivalent to result_of::deref<result_of::begin<Seq>::type>::type
#include <boost/fusion/sequence/intrinsic/front.hpp> #include <boost/fusion/include/front.hpp>
typedefvector<int,char> vec; BOOST_MPL_ASSERT((boost::is_same<result_of::front<vec>::type, int&>));