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//
// Created by light on 19-12-15.
//
#include <iostream>
#include "shape.h"
using namespace std;
class result {
public:
result() { puts("result()"); }
~result() { puts("~result()"); }
};
result process_shape(const shape &shape1, const shape &shape2) {
puts("process_shape()");
return result();
}
class Base {
public:
Base() {
cout << "Base()" << endl;
}
~Base() {
cout << "~Base()" << endl;
}
};
class Derived : public Base {
public:
Derived() {
cout << "Derived()" << endl;
}
~Derived() {
cout << "~Derived()" << endl;
}
};
string f() { return "abc"; }
void g() {
const string &s = f(); // still legal?
cout << s << endl;
}
Derived factory() {
return Derived();
}
int main() {
process_shape(circle(), triangle());
cout << endl;
// 临时对象延迟
// result &&r = process_shape(circle(), triangle());
// 临时对象延迟只对rvalue有用,而对xvalue无用!
// result &&r = std::move(process_shape(circle(), triangle()));
// const Base &b1 = factory();
Base *b1 = new Derived;
delete b1;
cout<<endl;
Derived d;
Base &b2 =d;
}
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