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Course Introduction：To create a C class, you need to use the class keyword to define the class name and member; 1. Use the class keyword followed by the class name and surrounded by curly braces; 2. Declare private data members and public member functions in the class; 3. Initialize the object with a constructor; 4. Provide an external access interface through the public access character; 5. Create an object and call its member functions to complete the operation; the complete class definition ends with a semicolon, and should follow the encapsulation principle, set the data members to private, and access it through the public method, so as to realize data hiding and modular design.

2025-08-15 comment 0  577

Course Introduction：It is recommended to use the DateTime class for PHP processing date and time. 1. Use the DateTime class to replace old functions, with clear structure and support time zone settings; 2. Use DateTime to manage time and specify the target time zone before output; 3. Use DateInterval to calculate the time difference and obtain complete information such as year, month, and day; 4. Pay attention to avoid the influence of mixed use of date() functions, hard-coded time strings and daylight saving time.

2025-07-09 comment 0  326

Course Introduction：To run a PHP script, you need to select the appropriate environment according to the purpose. 1. Local operation: Use integrated packages such as XAMPP, WAMP or MAMP to build an environment, put the PHP file into the http://localhost/yourfile.php through the browser to execute; Linux users can check and install PHP with sudoapt. 2. Command line operation: It is suitable for automation tasks, ensure that after PHP is added to PATH, enter the script directory in the terminal and execute phpscript.php. 3. Online testing: Quickly test code snippets through platforms such as 3v4l.org, phptester.net, etc., suitable for learning and sharing, but not for development of complete

2025-06-29 comment 0  838

Course Introduction：In PHP, custom session processing mechanism requires implementing the SessionHandlerInterface interface and registering handler. 1. Implement six core methods: open(), close(), read(), write(), destroy() and gc() to complete the session storage logic; 2. Create a custom handler class instance and register it through session_set_save_handler(); 3. Call session_start() before use to start the session. Suitable for improving performance, centralized management and extension functions. It is recommended to pay attention to permission control, concurrency problems and security protection to ensure the correct operation of GC and ensure the sess

2025-07-14 comment 0  973

Course Introduction：OKX official genuine App v6.127.1 is a world-renowned digital asset trading and Web3 platform, providing safe and convenient trading services and decentralized functions such as the NFT market. 1. The only recommended download channel is to visit OKX official website to beware of security risks brought by unofficial sources; 2. Find the "App Download" entrance on the official website and select the installation package of the corresponding system; 3. Open the file after the download is completed to install; 4. Complete the authorization operation according to the prompts; 5. Wait for the installation to be completed and start the App in the application list; 6. Create or log in to an account for the first time and complete identity verification; 7. Enable two-factor authentication to improve security; 8. Update the application regularly to ensure optimal functions and security; 9. Be familiar with the operation guide and contact the official in a timely manner

2025-07-01 comment 0  535

Course Elementary  13891

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  82444

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  13237

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  24695

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  27541

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.