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            Returns the result type of find_if given the sequence and
            predicate types.
          
template< typename Sequence, typename Pred > struct find_if { typedef unspecified type; };
Table 1.63. Parameters
| Parameter | Requirement | Description | 
|---|---|---|
| 
                       | A model of Forward Sequence | Operation's argument | 
| 
                       | A model of MPL Lambda Expression | Operation's arguments | 
result_of::find_if<Sequence, Pred>::type
            Return type: A model of the same iterator
            category as the iterators of Sequence.
          
            Semantics: Returns an iterator to the
            first element in Sequence
            for which Pred evaluates
            to true. Returns result_of::end<Sequence>::type
            Linear. At most result_of::size<Sequence>::value
#include <boost/fusion/algorithm/query/find_if.hpp> #include <boost/fusion/include/find_if.hpp>