适配器模式

有一个已经写好的接口，但是不符合需求，适配器就是将已有的接口转化为需要的形式

class MyPrint{
public:
    void operator()(int a, int b){
        cout << a + b << endl;
    }
};
class TargetInterface{
public:
    virtual void operator()(int v) = 0;
};
class MyAdaptor : public TargetInterface{
public:
    MyAdaptor(int param):param(param){}
    void operator()(int v){
        print(v, param);
    }
private:
    MyPrint print;
    int param;
};
MyAdaptor myBind2nd(int v){
    return MyAdaptor(v);
}
int main()
{
    vector<int> v;
    for(int i = 0; i < 10; ++i){
        v.push_back(i);
    }
    for_each(v.begin(), v.end(), myBind2nd(10));
    return 0;
}