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            A metafunction returning the result type of applying for_each to a sequence. The
            return type of for_each is always void.
          
template< typename Sequence, typename F > struct for_each { typedef void type; };
Table 1.51. Parameters
| Parameter | Requirement | Description | 
|---|---|---|
| 
                       | A model of Forward Sequence | Operation's argument | 
| 
                       | Any type | Operation's argument | 
result_of::for_each<Sequence, F>::type
            Return type: void.
          
            Semantics: Returns the return type of
            for_each for a sequence of type
            Sequence and a unary
            function object F. The
            return type is always void.
          
Constant.
#include <boost/fusion/algorithm/iteration/for_each.hpp> #include <boost/fusion/include/for_each.hpp>