代码重构-5 取消类的私有变量(实例变量)

class WX_Service{ 

private readonly WinnerService _winnerService = new WinnerService();

...

}

这种方式不符合设计模式思路,耦合太厉害,而且没有用到就开始占用实例了

 

改进为 类工厂方法

class WX_Service{ 

WinnerServiceInstancePool _winnerServiceInstancePool;

WinnerServiceInstancePool  winnerServiceInstancePool
{
get
{
if (_winnerServiceInstancePool== null)
_winnerServiceInstancePool = new WinnerServiceInstancePool();
return _winnerServiceInstancePool;
}
}

}

public class WinnerServiceInstancePool
{

private WinnerService _instance;

public WinnerService Instance
{
get
{
if (_instance == null)
_instance = new WinnerService();
return _instance;
}
}

 
}

转载于:https://www.cnblogs.com/zhshlimi/p/5109682.html