Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.
Minimum Configuration:
Usefulness of shooting: shooting is an effective means when hunting (hunting animals); After the arrow hits the oil jug, it can burn around it.
PS: In fact, I have seen all the design patterns a long time ago. However, I didn't write a blog, but I soon forgot it and didn't play any role. This time I summed it up in the form of a blog, and found that the effect was still obvious, because through this way of summarizing, I understood it more deeply, remembered it more firmly, and affected my thinking of realizing functions at ordinary times. Therefore, I encourage everyone to sort out what they have learned by taking notes, so that I believe they can understand it more deeply and better. I will write it down all the time and then plan to write a series of WCF articles.
Results
In centos6, you can save the rules by using the "service iptables save" command. The rules are saved in the/etc/sysconfig/iptables file by default. If you have just installed centos6 and started using iptables, you will find some default rules in the filter table. These default provided rules are actually saved in/etc/sysconfig/iptables. Examples of saving rules are as follows.
1. Open the desktop of the mobile phone and click to enter the setting interface;
杨长帆租田的面积，是按海岸线往外四丈来算的，可实际完全不止。
Liu Yifei, Lin Junjie ~ ~ ~
隋唐末年，隋文帝次子杨广欲谋篡位，把朝内重臣视为眼中钉。李渊为了避难，准备携全家离京返乡。李渊的次子李世民因为正在和长孙姑娘热恋，不想离开京城，而长沙姑娘是位极有远见的姑娘，她劝李世民暂回家乡，用功读书，静观世变，李世民听从了她的劝告，离京返乡。途中，李世民遭到杨广“收买的，号称“洛阳第一杀手”廖无极的袭击，危难中正巧碰到押送囚徒的秦琼。秦琼击退廖无极，救出李世民。秦琼到达山东不久，杨厂谋害了隋文帝篡位，当他强迫大臣伍建章伪造遗诏布告天下。当了皇帝的杨广要去扬州巡游，下令开凿运河。贪官污吏们趁机搜刮民脂，天下大乱，群雄四起。终于被自己最信任的宇文化及杀死。瓦岗军的程咬金觉得当皇帝没趣，把王位给了谋士李密。李密便自立为西魏王，但他不思进取，开始腐化堕落不说，还猜忌部下，残忍的杀害了自己的亲密战友。而胸怀大志、深谋远虑的李世民却思贤如渴，广纳人才。于是那些叛离李密的谋士大将们纷纷投到李世民的门下，众叛亲离的李密终于被中国籍的伊朗人王世充击败。在李世民的统帅下，徐茂公、秦琼、尉迟恭、程咬金、
Although the financing of the off-line and off-duty institutions has not formed an explosive growth in a short period of time, they have also received financing one after another, with the amount of financing being 10 million.
该剧讲述了四对情侣之间的故事
在生与死面前，仅剩的六名姐妹最后看了一眼深爱的大地，手挽手，拉响了手榴弹。
李敬文一边往葡萄架底下的木墩子走去，一边道。
再者，战争和争斗是世界发展的肯定的产物，这一点是谁也不能避免的。
According to data released by International Data Corporation (IDC), Oppo mobile phone sales ranked fourth worldwide in 2017, after Samsung, Apple and Huawei.
无论何种事物，因循守旧，墨守陈规，只会自取灭亡，求新求变，不断突破，才是王道。
Socks are high-frequency and low-cost consumer goods. People often ignore the influence of materials and designs on wearing experience and service life. However, holes, smells, dyes and heels are all real embarrassments in life.
