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        Metafunction that evaluates to mpl::true_
        if a certain type T is a
        conforming Fusion Sequence, mpl::false_
        otherwise. This may be specialized to accommodate clients which provide Fusion
        conforming sequences.
      
namespace traits { template <typename T> struct is_sequence { typedef unspecified type; }; }
| Parameter | Requirement | Description | 
|---|---|---|
| 
                   | Any type | The type to query. | 
typedef traits::is_sequence<T>::type c;
Return type: An MPL Boolean Constant.
        Semantics: Metafunction that evaluates to
        mpl::true_ if a certain type T
        is a conforming Fusion sequence, mpl::false_
        otherwise.
      
#include <boost/fusion/support/is_sequence.hpp> #include <boost/fusion/include/is_sequence.hpp>
BOOST_MPL_ASSERT_NOT(( traits::is_sequence< std::vector<int> > )); BOOST_MPL_ASSERT_NOT(( is_sequence< int > )); BOOST_MPL_ASSERT(( traits::is_sequence<list<> > )); BOOST_MPL_ASSERT(( traits::is_sequence<list<int> > )); BOOST_MPL_ASSERT(( traits::is_sequence<vector<> > )); BOOST_MPL_ASSERT(( traits::is_sequence<vector<int> > ));