Next, we are going to implement the Validator class, which is used here as Context and is responsible for receiving the user's request and delegating it to the strategy object, as follows:
Https://security.tencent.com/index.php/blog/msg/62
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Http://www.jiemian.com/article/2063210.html
Modern Pentathlon
Schedule), indicating when and how often the event starts, and the second part is the event action
The same sequence of events generated after the finger touches the screen is a click event.
