Course20652
Course Introduction:Design pattern (Design pattern) is a set of classified and cataloged summary of code design experience that is used repeatedly, known to most people. The purpose of using design patterns is to reuse code, make the code easier to understand by others, and ensure code reliability. There is no doubt that design patterns are win-win for ourselves, others, and the system; design patterns make code writing truly engineering; design patterns are the cornerstone of software engineering, just like the structure of a building.
Course6482
Course Introduction:JavaScript is a particularly flexible language. In the early years, it was considered a toy-like language that could only do a small job of painting web pages. The project project is not very large, let alone the application of design patterns in Javascript. However, with the rise of Nodejs, HTML5 and web2.0, JavaScript itself has become more and more important. Many classic programming ideas such as design patterns have also been applied to JavaScript to complete larger projects. We have collected "JavaScript Design Patterns Video Tutorial", hoping to help everyone better understand the concept of design patterns.
Course3326
Course Introduction:The classic MVC design pattern is the first choice for many commercial websites. This course uses a classic case as the entry point to allow everyone to quickly understand the agile development brought by the design model. It uses several commonly used design patterns to let everyone understand the framework. The underlying operating principle
Course2282
Course Introduction:Design patterns are solutions developers face to common problems during software development and represent best practices. The main content of this course includes common JS design patterns and specific application scenarios, creating a one-stop knowledge long-term service, suitable for students with a basic knowledge of JS.
Course4361
Course Introduction:JavaScript is a purely object-oriented programming language, and object-oriented is always its core. This set of courses uses the creation and use methods of commonly used objects to show you the ins and outs of JavaScript objects, past and present, and all involved in JavaScript. The design pattern of object creation has been analyzed and explained in depth. Welcome to learn.
Is it impossible to have a full page three row CSS-Flex layout in mobile safari?
2023-09-15 18:24:47 0 1 200
Laravel API + React front-end request, Axios returns 404 - Access-Control-Allow-Origin
2023-09-02 12:50:08 0 1 195
ScrollPosition not set to top when navigating to other pages
2023-08-30 09:07:14 0 1 254
Is there a CSS parent selector?
2023-08-23 10:53:50 0 2 195
Is it bad practice to use normal variables in React components?
2023-08-16 16:02:13 0 1 251
Course Introduction:So far, we've covered three design patterns in this series. We define four different categories of design patterns. In this article, I will explain the Strategy Design Pattern, which is a behavioral design pattern. You may have a question: when should you use this design pattern? I would say when we have multiple methods (algorithms) to perform the same operation and we want the application to choose a specific method based on the parameters you have. This mode is also called strategy mode. A very simple example for this article is the sorting function. For example, we have multiple algorithms for sorting arrays, but depending on the number of array elements, we should choose which algorithm to use to get the best performance. This mode is also called strategy mode. Question I will give one that integrates multiple payment gateways
2023-08-28 comment 0725
Course Introduction:Strategy pattern is a design pattern that enables dynamic changes in algorithms or behaviors by allowing them to change independently of client objects. This model consists of roles such as Context, Strategy and ConcreteStrategy. In a practical case, it helps us create applications that use different algorithms to calculate student grades. The advantages of the Strategy pattern include flexibility, decoupling, scalability, and reusability. It is suitable for situations where the system has multiple ways to perform tasks, the algorithm or behavior needs to be dynamically changed at runtime, and the coupling of the client code with the specific implementation of the algorithm or behavior needs to be avoided.
2024-05-09 comment627
Course Introduction:The design patterns in JavaScript include: singleton mode, strategy mode, proxy mode, iterator mode, "publish-subscribe" mode, command mode, combination mode, template method mode, flyweight mode, chain of responsibility mode, mediator mode, Decorator pattern, state pattern, adapter pattern, appearance pattern, etc.
2022-01-26 comment 02712
Course Introduction:1. Basic introduction 1) In the Strategy Pattern (StrategyPattern), algorithm families (strategy groups) are defined and encapsulated separately so that they can be replaced with each other. This mode makes the changes of the algorithm independent of the customers who use the algorithm. 2) This algorithm embodies Several design principles have been adopted. First, separate changing code from unchanged code; second, program for interfaces rather than specific classes (strategy interfaces are defined); third, use more combination/aggregation and less inheritance. (Customers use strategies in combination) For example: for environmental energy saving, three energy saving methods are proposed: baseband board energy saving, SPC energy saving, product energy saving. Different energy saving methods have different specific processing procedures for environmental equipment. 2. Traditional method (1 ) Class diagram (2) Coding implementation 1) Defined
2023-05-02 comment 01009
Course Introduction:问题:如何在C++中选择和优化设计模式?设计模式选型:考虑问题域、系统要求和对象交互。常用设计模式:工厂方法、建造者、单例和策略。优化策略:代码复用、智能指针和编译时多态。
2024-05-13 comment910