C++11: Practical Features

Today stroll cplusplus.com found that C + + is really a lot of easy to use features, first understand some of the most commonly used

Initialize List

    vector<int> tmp ({1,2,3,4});        Vector<pair<intint> > tmp_pair (        {            {12  },            {34}        }    );

or direct initialization, very much like the normal array initialization.

    vector<int> tmp = {1234};        Vector<pair<intint> > tmp_pair ={        12 },        {34}    };

For Iteration

     for (int  e:tmp) {        cout<<e<<endl;    }          for (pair<intint>& e:tmp_pair) {        cout<<e.first<<"  ,"<<e.second<<Endl;    }

This is like Java, which is much easier than writing explicit iterators, especially in C + + where iterator declarations are too cumbersome (as if you can use auto to automatically determine the type)

C++11: Practical Features