擦除基类向量和派生类向量中的对象

#include <vector>
#include <typeinfo>

class Base {
public:
    virtual void doSomething() {
        // 基类的操作
    }
};

class Derived : public Base {
public:
    void doSomething() override {
        // 派生类的操作
    }
};

int main() {
    std::vector<Base*> objects;

    // 向向量中添加基类和派生类对象
    objects.push_back(new Base());
    objects.push_back(new Derived());

    // 使用迭代器遍历向量
    for (auto it = objects.begin(); it != objects.end(); ++it) {
        if (auto derived = dynamic_cast<Derived*>(*it)) {
            // 派生类对象的操作
            derived->doSomething();
        } else {
            // 基类对象的操作
            (*it)->doSomething();
        }
    }

    // 释放内存
    for (auto obj : objects) {
        delete obj;
    }

    return 0;
}

#include <vector>
#include <typeinfo>

class Base {
public:
    virtual void doSomething() {
        // 基类的操作
    }
};

class Derived : public Base {
public:
    void doSomething() override {
        // 派生类的操作
    }
};

int main() {
    std::vector<Base*> objects;

    // 向向量中添加基类和派生类对象
    objects.push_back(new Base());
    objects.push_back(new Derived());

    // 遍历向量
    for (auto obj : objects) {
        if (typeid(*obj) == typeid(Derived)) {
            // 派生类对象的操作
            static_cast<Derived*>(obj)->doSomething();
        } else {
            // 基类对象的操作
            obj->doSomething();
        }
    }

    // 释放内存
    for (auto obj : objects) {
        delete obj;
    }

    return 0;
}