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Course Introduction：What is Simple Factory? Simple factory is not design pattern. It simply decouples object creation from client code. In other words, Simple factory encapsulates object instantiation by moving instantiation logic to a separate class. Simple fa

2024-11-24 comment 0  511

Course Introduction：What is a Factory class? A factory class is a class that creates one or more objects of different classes. The Factory pattern is arguably the most used design pattern in Software engineering. In this article, I will be providing an in-depth explana

2024-11-05 comment 0  550

Course Introduction：Meyers' Singleton Implementation DemystifiedThe Singleton design pattern ensures that a class has only one instance throughout the program's...

2024-12-26 comment 0  721

Course Introduction：The factory design pattern creates objects centrally through a factory class, avoiding the client using new hard code to instantiate specific classes; 2. Define the abstract product Pizza, and the specific products CheesePizza, VeggiePizza and PepperoniPizza inherit it; 3. PizzaFactory returns the corresponding Pizza instance according to the input type; 4. The client creates objects through the factory and calls its methods to realize the encapsulation of loose coupling and creation logic, which is convenient for expansion and maintenance. This implementation is a simple factory model, ending with a complete sentence.

2025-08-02 comment 0  833

Course Introduction：This article explains PHP's Factory Pattern, a creational design pattern for object creation. It details how to create flexible object instantiation using factory classes and methods, highlighting benefits like loose coupling, improved code organiza

2025-03-10 comment 0  545

Course Elementary  13884

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82439

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13234

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24692

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27536

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.