[Handwritten Source-Design Mode 19]-Memo Mode-If there is a moon box in the glory of the King
1: Theme Disassembly 1 Basic Introduction If there is a treasure box of moonlight in the glory of the King (3) Advantages and disadvantages of memo mode (4) Scenarios applicable Application examples Summary 2: Basic Introduction Memo mode: Capture the internal state of an object without destroyUTF-8...
Posted by seany123 on Mon, 20 Sep 2021 17:46:36 +0530
Detailed design mode - single case mode
brief introduction Singleton Pattern is one of the simplest design patterns in Java. This type of design pattern is a creation pattern, which provides the best way to create objects. It provides a way to access its unique object, which can be accessed directly without instantiating the object UTF-8...
Posted by greg_soulsby on Tue, 21 Sep 2021 05:47:31 +0530
Observer mode and visitor mode
ยท1, Observer mode When there is a one to many relationship between objects, the Observer Pattern is used. For example, when an object is modified, it will automatically notify the objects that depend on it. Observer mode belongs to behavioral mode. Advantages and disadvantages of observer mode UTF-8...
Posted by mark123 on Tue, 21 Sep 2021 07:32:05 +0530
Multiple verification artifact responsibility chain mode
background Recently, I was working on requirements. I wrote a method. I first verified it in front. if condition a is not met, return. if condition B is not met, return... A total of 5 verifications were written. After the verification is passed, the following logic will be executed. This is noUTF-8...
Posted by lordrt on Fri, 24 Sep 2021 20:54:31 +0530
Decorator mode of design mode
summary Decorator Pattern allows you to add new functionality to an existing object without changing its structure. This type of design pattern belongs to structural pattern, which is a wrapper for existing classes. This pattern creates a decoration class to wrap the original class, and providUTF-8...
Posted by gtzpower on Fri, 24 Sep 2021 21:19:31 +0530
Template mode [reading notes]
In real life, many things include several implementation steps, such as inviting guests to dinner. No matter what they eat, they generally include several steps, such as ordering, eating and paying. Generally, the order of these steps is: ordering -- > eating -- > paying. Template mode TemplateUTF-8...
Posted by ruddyu78 on Sat, 25 Sep 2021 07:28:34 +0530
Design mode section III - observer mode
preface Since a large number of pseudo codes will be posted in the design pattern chapter, in order to compress the code length for easy viewing, the code irrelevant to the design pattern, such as constructor, or member function public, private, protect attribute, etc., are not written in the cUTF-8...
Posted by MindOverBody on Sat, 25 Sep 2021 13:05:58 +0530
Event Bus design pattern learning notes
Original: Design Patterns: Event Bus Motivation Imagine a large application with a large number of interacting components, and you want a way to make your components communicate while maintaining the principles of loose coupling and separation of concerns. The event bus pattern can solve your pUTF-8...
Posted by uptime on Sun, 26 Sep 2021 06:59:05 +0530
Observer mode
1. Overview Observer mode is a software design mode in which a target object manages all observer objects that depend on it and actively notifies them when their own state changes. This is usually achieved by calling the methods provided by each observer. This mode is often used in real-time evUTF-8...
Posted by unmash on Sun, 26 Sep 2021 22:55:52 +0530
Detailed Single Case Pattern for Design Patterns
1.1 Lazy mode, thread insecurity public class Singleton { private static Singleton instance; private Singleton (){} public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; } } It achieves the effect of lazy loading, but it does not work proUTF-8...
Posted by vintox on Sun, 26 Sep 2021 23:41:56 +0530