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This blog is written with reference to the boss Learning hard and his own personal understanding. There may be something wrong with the content. I hope you guys don't hesitate to give me advice Portal: https://www.cnblogs.com/zhili/p/DesignPatternSummery.html Simple Factory Pattern is an innovative pattern of classes, also known as static facto ...

Abstract: in this paper, an example scenario is used to describe the original model pattern in Gof 23 design pattern, which is implemented with Quarkus framework code, and the UML model of the implementation code is also given. Keywords: Gof 23 design pattern original model pattern Quarkus 1 basic knowledge 1.1 standard definition Prototype pa ...

stay State mode of design mode The state mode is introduced in, leaving a suspense about how to completely kill if/else. This paper mainly solves this problem. State transition and maintenance In the previous article, the maintenance of state is in the context, which inevitably uses if/else for judgment. If the maintenance of state is place ...

Detailed explanation of Observer mode The relationship between data in Excel and line chart, pie chart and column chart; The relationship between model and view in MVC mode; Event source and event handler in the event model. All this is very convenient if implemented in observer mode. Definition and characteristics of pattern The definition of ...

Author: Qiucheng summary Android 12 new system_ The server process (LocalService) is a local service used to manage native tombstones. The service is started after the system server initialization process is started, added to the LocalService, and then a ServiceThread thread (mHandler.post) is started to process the business of the service ...

Author: Yi Dong preface There is no perfect architecture, only the most appropriate architecture. Android application architecture changes: MVC, MVP, MVVM, MVI. There are numerous high-quality articles in the technology community on the concept, logic, implementation methods, advantages and disadvantages of these four architectures, ...

1. Template method pattern Basic introduction 1) Template Method Pattern, also known as template pattern, defines the template of the method executing it in an abstract class. Its subclasses can override the method implementation as needed, but the call will be made in the way defined in the abstract class. 2) In short, the template metho ...

preface For some background on this article, please move on to the previous article in this series. Simple crawler design (I) -- basic model Simple crawler design (II) -- crawling range Simple crawler design (III) -- the range of web pages to be processed Design description Starting from this article, we discuss the specific implement ...

Main article (directory of all java design patterns)https://blog.csdn.net/grd_java/article/details/122252696 Source locationCode cloud: https://gitee.com/yin_zhipeng/design_mode.gitGitHub: What you must know before learning design patterns When looking at design patterns, we should comprehensively consider them from a larger perspective ( ...

Decorator modeI've learned several design patterns before. Continue todayDecorator mode is a structural mode, which is used to wrap and encapsulate the current class object. It is hoped that the function of the object can be expanded without modifying the current class object and class definition.When calling, the decorated object is used inste ...