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Moves an iterator a specified distance.
template< typename I, typename M > struct advance { typedef unspecified type; };
Table 1.17. Parameters
| Parameter | Requirement | Description | 
|---|---|---|
| 
                     | Model of Forward Iterator | Iterator to move relative to | 
| 
                     | Model of MPL Integral Constant | Number of positions to move | 
result_of::advance<I,M>::type
          Return type: A model of the same iterator
          concept as I.
        
          Semantics: Returns an iterator a distance
          M from I.
          If I is a Bidirectional
          Iterator then M
          may be negative.
        
#include <boost/fusion/iterator/advance.hpp> #include <boost/fusion/include/advance.hpp>
typedefvector<int,double,char> vec; typedefresult_of::begin<vec>::type first; typedefresult_of::next<first>::type second; typedefresult_of::next<second>::type third; BOOST_MPL_ASSERT((result_of::equal_to<result_of::advance<first, boost::mpl::int_<2> >::type, third>));