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Article 3 General DefinitionsBefore adding this rule, we force the ping command on 146 to stop, and then use the following command to add a new rule at the front end of the INPUT chain of the filter table.From the above command class code, we can see that any operation has an execute method to perform the operation. The above code uses traditional object-oriented programming to implement the command mode. The procedural request call of the command mode is encapsulated in the execute method of the command object. Have we found the above writing code a little cumbersome? We can do this using the callback functions in javascript, In object-oriented, The receiver of the command mode is saved as an attribute of the command object, and the command execution operation is agreed to call the command.execute method. However, if we use the callback function, then the receiver is closed in the environment where the callback function is generated, and the execution operation will be simpler. Only the callback function can be executed. Let's look at the following code:There is another point, Because the drag armour-piercing cocktails were almost useless before, After so many supplies, we have accumulated a lot of ammunition, and the quantity is almost equal to that of ordinary bullets, so we can play with "strength" and don't have to worry about not enough ammunition. This is much better than "74 sprays" which have to be used crepily. If there is enough ammunition, we can output high firepower, which is as simple as that. "Zhang Xiaobo said.影片取材于传统民间神话故事，讲述的是两名天将为了守护天庭和百姓，甘愿牺牲自我，与恶蛟对抗的故事，给观众传达了惩恶扬善、邪不压正的正能量思想。《浪漫是一册副刊》又名《罗曼史是别册附录》，是李政孝执导、郑贤贞执笔、韩星李钟硕和李奈映主演，将以出版社为背景，将会是一部浪漫爱情喜剧。。如果男主角确定，那么这部《笑傲江湖之东方不败》马上就能开拍了。