c++ STL之 for_each（权哥）

STL中支持迭代器的容器可以用for_each来做循环迭代

以下是一个demo：

#include <iostream>#include <algorithm>using namespace std;#include <string>void add10(int& element){element += 10;}string print(int element){cout << element << ' ';return "芙蓉";}class add{int delta;public:add(int d):delta(d){}/*通过重载（）使得类具有函数的类似函数的特性*/void operator()(int& element){element += delta;}};/*模拟for_each*/template <typename Iter, typename Func>void foreach(Iter ib, Iter ie, Func f){while(ib!=ie) f(*ib++);}int main(){int a[5] = {11,22,33,44,55};for_each(a,a+5,add10);for_each(a,a+5,print);cout<<endl;for_each(a,a+5,add(5));for_each(a,a+5,print);cout<<endl;for_each(a,a+5,add(1));for_each(a,a+5,print);cout<<endl;}/*输出：21 32 43 54 65 26 37 48 59 70 27 38 49 60 71 */