C++11 move 语义

typedef struct MyTest{
    int a;
    int b;
    float c;
    int * d;
    MyTest ():a(1),b(2),c(2.2){
        d = new int[10];
        for(int i = 0;i<10;i++){
            d[i] = i;
        }
    }
    ~MyTest(){
        delete []d;
    }
}MyTest;

    MyTest(MyTest& t){
        a = t.a;
        b = t.b;
        c = t.c;
        d = new int[10];
        for (int i = 0;i<10;i++){
            d[i] = t.d[i];
        }
    }

    MyTest(MyTest&& t){
        a = t.a;
        b = t.b;
        c = t.c;
        d = t.d;
        t.d = NULL;
    }