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            A metafunction that returns the result type of count
            given the sequence and search types.
          
template< typename Sequence, typename T > struct count { typedef int type; };
Table 1.64. Parameters
| Parameter | Requirement | heading Description | 
|---|---|---|
| 
                       | A model of Forward Sequence | Operation's argument | 
| 
                       | Any type | Operation's argument | 
result_of::count<T>::type
            Return type: int.
          
            Semantics: Returns the return type of
            count. The return type is always
            int.
          
Constant.
#include <boost/fusion/algorithm/query/count.hpp> #include <boost/fusion/include/count.hpp>