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  • for_each(c++11)

    http://www.cplusplus.com/reference/algorithm/for_each/

    1 template<class InputIterator, class Function>
    2   Function for_each(InputIterator first, InputIterator last, Function fn)
    3 {
    4   while (first!=last) {
    5     fn (*first);
    6     ++first;
    7   }
    8   return fn;      // or, since C++11: return move(fn);
    9 }
     1 // for_each example
     2 #include <iostream>     // std::cout
     3 #include <algorithm>    // std::for_each
     4 #include <vector>       // std::vector
     5 
     6 void myfunction (int i) {  // function:
     7   std::cout << ' ' << i;
     8 }
     9 
    10 struct myclass {           // function object type:
    11   void operator() (int i) {std::cout << ' ' << i;}
    12 } myobject;
    13 
    14 int main () {
    15   std::vector<int> myvector;
    16   myvector.push_back(10);
    17   myvector.push_back(20);
    18   myvector.push_back(30);
    19 
    20   std::cout << "myvector contains:";
    21   for_each (myvector.begin(), myvector.end(), myfunction);
    22   std::cout << '
    ';
    23 
    24   // or:
    25   std::cout << "myvector contains:";
    26   for_each (myvector.begin(), myvector.end(), myobject);
    27   std::cout << '
    ';
    28 
    29   return 0;
    30 }

    Output:

    myvector contains: 10 20 30
    myvector contains: 10 20 30
    
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  • 原文地址:https://www.cnblogs.com/guxuanqing/p/6080970.html
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