艺术照片大全100张

The core idea is: there is a Source class with a method to be adapted and Targetable when the target interface is used. Through the Adapter class, the function of Source is extended to Targetable. Look at the code:Weightlifting belt:Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.　　父亲虽善良，可又愚昧，他要翠巧在四月里完婚。顾青行将离去，翠巧要随去延安，顾青有心无力。翠巧弟弟憨憨跟着顾大哥，送了一程又一程。翻过一座山梁，顾青看见翠巧站在峰顶上，她用甜美歌喉唱歌送别，顾青深受感动。Goo goo goo goo船娘就和枫叶一个递一个接，将小舟上家伙都搬上浮舟亭。似乎常干这个？他蹲在黎章身边，一边和他说话，一边专注地盯着她不停地翻转烤肉，又往上面撒盐和调料。