工程師的哭爸

動機 ：
該類別有太多Responsibility造成類別程式碼過多或是該類別和別類別互動太頻繁造成類別間couple tightly.
方式：
如果移出的方法需要用到原本類別的屬性，可考慮下列4種方式
(1)將該屬性和方法一起移出

1.A design decision that is reasonable and correct one week can become incorrect in another.That is not a problem;the only problem is not to do something about it.