QSet追加自定义对象

#include <QSet>
#include <QString>
#include <QDebug>

class Person {
public:
    Person(const QString &name, int age) : m_name(name), m_age(age) {}

    QString name() const { return m_name; }
    int age() const { return m_age; }

    bool operator==(const Person &other) const {
        return m_name == other.m_name && m_age == other.m_age;
    }

private:
    QString m_name;
    int m_age;
};

Q_DECLARE_METATYPE(Person)

uint qHash(const Person &person, uint seed) {
    seed ^= qHash(person.name(), seed);
    seed ^= qHash(person.age(), seed);
    return seed;
}

int main() {
    QSet<Person> people;
    people.insert(Person("Alice", 30));
    people.insert(Person("Bob", 25));

    for (const Person &person : people) {
        qDebug() << person.name() << person.age();
    }

    return 0;
}