Course Introduction：Implementing methods in JavaScript that mainly rely on arrays is implemented. 1. The stack uses push to stack and pop to stack to achieve last-in first out; 2. The queue uses push to queue and shift to queue to realize first-in first out; 3. The queue can also be implemented in reverse; 4. It is recommended to encapsulate it into classes for reuse and management, such as the Stack class includes push, pop, peek and isEmpty methods; 5. The array implementation is simple and direct, but performance issues need to be paid attention to, especially shift operations may affect efficiency.
2025-07-13 comment 0 642
Course Introduction：In PHP, implementing polymorphism can be achieved through method rewriting, interfaces, and type prompts. 1) Method rewriting: Subclasses override parent class methods and perform different behaviors according to object type. 2) Interface: The class implements multiple interfaces to realize polymorphism. 3) Type prompt: Ensure that the function parameters are specific to the type and achieve polymorphism.
2025-05-20 comment 0 1095
Course Introduction：A decorator is a tool that modifies or enhances the behavior of a function or class without changing its source code. It implements function extension by accepting the objective function or class as parameters and returning a new wrapped function or class. It is often used to add logs, permission control, timing and other functions. To create a decorator: 1. Define a function that receives a function or class; 2. Define a wrapper function in it to add additional operations; 3. Call the original function or class; 4. Return the wrapped result. Just use the @decorator_name syntax to apply it to the objective function or class. For functions with parameters, compatibility can be ensured using *args and **kwargs in the decorator. Python has built-in @staticmethod and @c
2025-06-30 comment 0 923
Course Introduction：Laravel is a modern PHP framework that provides a powerful tool set, simplifies development processes and improves maintainability and scalability of code. 1) EloquentORM simplifies database operations; 2) Blade template engine makes front-end development intuitive; 3) Artisan command line tools improve development efficiency; 4) Performance optimization includes using EagerLoading, caching mechanism, following MVC architecture, queue processing and writing test cases.
2025-04-19 comment 0 645
Course Introduction：Event-driven architecture (EDA) is a system design method that triggers and responds to behaviors through "events" and Laravel implements EDA using Events and Listeners. 1. Events are an action trigger point, such as user registration; 2. The listener performs operations in response to events, such as sending emails and recording logs; 3. Create events and listeners through Artisan commands; 4. Bind events and listeners in EventServiceProvider; 5. Use event() or Event::dispatch() to trigger events and pass data; 6. Enable queue asynchronous execution for time-consuming tasks; 7. Pay attention to naming specifications, event granularity, and measurement
2025-07-06 comment 0 550
Course Elementary 13770
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 82280
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 13144
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 24589
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 27446
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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