call_constructor

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

class A {
public:
    // A() {}
    A(string name) : _name(name) { printName(__PRETTY_FUNCTION__); }
    ~A() { printName(__PRETTY_FUNCTION__); }
    // 拷贝构造函数
    A(const A &other) { _name += ":copyfrom-" + other._name; printName(__PRETTY_FUNCTION__); }
    // 赋值运算符
    A& operator=(const A &other) {
        if (this != &other) {
            _name += ":assignfrom-" + other._name;
            printName(__PRETTY_FUNCTION__);
        }
        return *this;
    }
    // 移动构造函数
    A(A &&other) { _name += ":movefrom-" + other._name; printName(__PRETTY_FUNCTION__); }
    // 移动赋值运算符
    A& operator=(A &&other) {
        if (this != &other) {
            _name += ":moveassignfrom-" + other._name;
            printName(__PRETTY_FUNCTION__);
        }
        return *this;
    }

    string _name = "anno";

private:
    void printName(string funcName) { cout << _name << "\t" << funcName << endl; }
};

int main()
{
    std::vector<A> vec {std::string("22"), std::string("11")};

    std::cout << "sort begin==================\n";
    std::sort(vec.begin(), vec.end(), [](const A& lhs, const A& rhs) {
        return lhs._name < rhs._name;
    });

    std::cout << "sort end==================\n";
    for (const auto &ele : vec) {
        std::cout << ele._name << " ";
    }

    return 0;
}