Add a fine oneThe advantage is that the coupling between the sender and the receiver of the request is eliminated.Carved Saron Evil Iron Leg Armor"I remember we had a very clear division of tactics at that time, First, adjust all the automatic rifles in hand to semi-automatic shooting mode, Of the 15 men, apart from the gunners and the bazookas, Most of the others use '81 bars', There are also a small number of 63 types, I'm using the 63, One of the characteristics of this gun and the 81-bar is that the single shot accuracy is especially good, Even better than '56 and a half', Much better than 56 Chong and some Mao Zi guns captured from the Vietnamese, At that time, in order to give full play to this advantage in precision, The company commander ordered us to use this tactic, The concrete implementation is to use heavy machine guns to suppress fire in hidden places, In addition to killing as many enemies as possible, If the enemy takes tactical actions such as lying down to avoid shooting, Then use machine gun fire to limit its movement range, That is to say, they are suppressed in situ, and then rifles are used to give full play to the advantage of high semi-automatic shooting accuracy, giving them "roll call" one shot at a time. This tactic is still very effective in dealing with the first and second large-scale attacks, with extremely high efficiency, and almost all the Vietnamese troops who came up were killed on the way to attack.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:《铁杉树丛》根据布莱恩麦克格瑞卫（BrianMcGreevy）同名名恐怖小说改编，主要黑暗的奇事、青春期的欺骗和贪婪的关系为背景，探讨了怪物的本性。[News] On March 15, Chengdu Business Daily reported that "talented women from Peking University returned to their hometowns to start their own businesses and gave up white-collar express delivery." The report said that Xu Lu, manager of Yuantong Express Company in Shifang City, was admitted to Peking University's journalism major with excellent results in 2000. After graduation, he worked in a well-known technology company and a real estate company in Beijing successively, becoming a white-collar high-paying group. However, in order not to suffer from the separation of husband and wife, after marriage, she gave up her white-collar life in Beijing and chose to return to her hometown to start her own business. Now, Xu Lu can not only drive a truck to deliver express, but also be a "female man" who can carry about 100kg of express. After the report was released, many media reprinted it, triggering a heated discussion.
