Course Introduction：The reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.
2025-05-08 comment 0 983
Course Introduction：What is Dependency Injection in PHP, and Why is it Important for Testing and Code Maintainability? Dependency Injection (DI) is a design pattern used in software development to improve code flexibility, testability, and maintainability. It is p
2024-12-29 comment 0 1273
Course Introduction：This article discusses how to build a simple dependency injection container (DI container) PHP package. All code in the article, including PHPDoc annotations and unit tests (100% code coverage), has been uploaded to the GitHub repository and listed on Packagist. Key points: Building DI containers helps developers understand the basic principles of dependency injection and the working mechanism of containers. DI containers have two main functions: "dependency injection" and "container". It needs to be able to instantiate and include services using constructor injection or setter injection methods. Symfony dependency injection containers can be used as a reference for creating custom containers. It divides container configuration into parameters and services, allowing secure storage
2025-02-15 comment 0 893
Course Introduction：Key Takeaways Dependency Injection Containers (DIC) are a key tool for maintaining codebases in larger PHP applications and frameworks, but can impact performance. Some of the well-known DICs for PHP include PHP-DI, Symfony\DependencyInjection, Ze
2025-02-20 comment 0 625
Course Introduction：This article explains Inversion of Control (IoC) in PHP, a design principle where dependency creation is managed externally, promoting loose coupling. It details IoC implementation via manual dependency injection and service containers, highlighting
2025-03-10 comment 0 647
Course Elementary 13743
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 82251
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 13130
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 24578
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 27435
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.
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