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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 1.51. Parameters
Parameter |
Requirement |
heading Description |
---|---|---|
Sequence |
A model of Forward Sequence |
Operation's argument |
T |
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>