inserter 和front_inserter的区别

      1 #include
      2 #include
      3 #include
      4 #include
      5 using namespace std;
      6
      7 int main()
      8 {
      9         list ilist,ilist2,ilist3;
     10         for(list::size_type i=0;i!=4;i++)
     11                 ilist.push_front(i);
     12         copy(ilist.begin(),ilist.end(),front_inserter(ilist2));
     13         copy(ilist.begin(),ilist.end(),inserter(ilist3,ilist3.begin()));
     14         copy(ilist.begin(),ilist.end(),ostream_iterator(cout," "));
     15         cout<     16         copy(ilist2.begin(),ilist2.end(),ostream_iterator(cout," "));
     17         cout<     18         copy(ilist3.begin(),ilist3.end(),ostream_iterator(cout," "));
     19         cout<     20 }