策略模式在AI大模型中的魅力与实例分析

cpp

// 抽象策略角色
class Strategy {
public:
    virtual ~Strategy() {}
    virtual void execute() = 0; // 策略方法
};

// 具体策略角色A
class StrategyA : public Strategy {
public:
    void execute() override {
        // 执行策略A的逻辑
        std::cout << "Executing Strategy A" << std::endl;
    }
};

// 具体策略角色B
class StrategyB : public Strategy {
public:
    void execute() override {
        // 执行策略B的逻辑
        std::cout << "Executing Strategy B" << std::endl;
    }
};

// 上下文环境角色
class Context {
private:
    Strategy* strategy; // 持有具体策略对象的引用
public:
    Context(Strategy* s) : strategy(s) {}
    void setStrategy(Strategy* s) {
        strategy = s;
    }
    void executeStrategy() {
        strategy->execute(); // 执行当前策略
    }
};

// 使用示例
int main() {
    Context context(new StrategyA()); // 初始化为策略A
    context.executeStrategy(); // 执行策略A

    context.setStrategy(new StrategyB()); // 切换为策略B
    context.executeStrategy(); // 执行策略B

    // 释放内存
    delete context.strategy;
    return 0;
}