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#include "stdafx.h"
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
#include <string>
#include <iostream>
#include <boost/format.hpp>


using namespace boost;


class Strategy
{
public:
	virtual void AlgorithmStragegy() = 0;
};


class StrategyA : public Strategy
{
public:


	virtual void AlgorithmStragegy()
	{
		std::cout << "AAAAAAA" << std::endl;
	}
};


class StrategyB : public Strategy
{
public:


	virtual void AlgorithmStragegy()
	{
		std::cout << "BBBBBBB" << std::endl;
	}
};


class Context
{
public:
	Context(shared_ptr<Strategy> strategy)
	{
		_m_Strategy = strategy;
	}


	void setStrategy(shared_ptr<Strategy> strategy)
	{
		_m_Strategy = strategy;
	}


	void DoAction()
	{
		_m_Strategy->AlgorithmStragegy();
	}
protected:
	shared_ptr<Strategy> _m_Strategy;
};


void testStrategy()
{
	shared_ptr<StrategyA> strategyA = make_shared<StrategyA>();
	auto strategyB = make_shared<StrategyB>();
	shared_ptr<Context> context = make_shared<Context>(strategyA);
	context->DoAction();
	context->setStrategy(strategyB);
	context->DoAction();
}

本文标签： 策略模式Strategy

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