C++委派模板

#include <iostream>

// 被委托者基类
class Task {
public:
    virtual void execute() = 0;
};

// 具体被委托者A
class TaskA : public Task {
public:
    void execute() override {
        std::cout << "Executing Task A" << std::endl;
    }
};

// 具体被委托者B
class TaskB : public Task {
public:
    void execute() override {
        std::cout << "Executing Task B" << std::endl;
    }
};

// 委托者模板类
template <typename T>
class Delegator {
public:
    Delegator(T* task) : task_(task) {}

    void doTask() {
        task_->execute();
    }

private:
    T* task_;
};

int main() {
    TaskA taskA;
    TaskB taskB;

    Delegator<TaskA> delegatorA(&taskA);
    Delegator<TaskB> delegatorB(&taskB);

    delegatorA.doTask(); // 输出: Executing Task A
    delegatorB.doTask(); // 输出: Executing Task B

    return 0;
}