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Course Introduction：Efficient code submission: Best practices to avoid future problems Bad code submission can cause huge trouble. Have you ever struggled to pursue the intent of a specific change, or the status of the current code? The correct way to submit code can effectively avoid these difficulties. This article will dive into the best practices of software submission. Core points The correct code submission can prevent confusion and save future time. Submissions should be atomic, dealing with only one specific issue at a time, rather than bloatedly affecting a large number of files and adding multiple features. Good submissions should be clear, insightful and atomic. The commit structure should contain types or components, clear topics, and optional body text to provide more context or details. Problems should be handled in the submission information, using keywords and question IDs

2025-02-10 comment 0  867

Course Introduction：Assigning values ??to variables in Python must follow the naming rules and use the = symbol. 1. Select variable names that comply with the specifications: use lowercase letters and underscores, do not start with numbers, avoid keywords, and keep them concise and meaningful; 2. Different types such as numbers, strings, lists, Boolean values, etc. can be assigned, and the types are automatically determined by the assigned value; 3. Variables can be reassigned at any time or updated based on the current value, and abbreviation operations such as = and -= are supported; 4. Support one line of code to assign values ??to multiple variables at the same time, and it is necessary to ensure that the number of variables and values ??is consistent.

2025-06-26 comment 0  238

Course Introduction：Event loops are the core mechanism of JavaScript asynchronous programming. It cooperates with call stack, message queue and event loop to handle multiple tasks under a single thread. 1. The call stack executes the current task; 2. After the asynchronous operation is completed, the callback enters the message queue; 3. The event loop pushes the callback to the call stack for execution. Macro tasks (such as setTimeout) and micro tasks (such as Promise.then) have different priority: 4. After each event loop, all current micro tasks will be cleared. For example, the output order in the code is Start→End→Promise→Timeout, which means that micro-tasks take precedence over macro-task execution. In actual development, micro-tasks should be avoided indefinite recursion and do not rely on precise time control.

2025-07-03 comment 0  936

Course Introduction：Common reasons for not being able to register for WeChat include mobile phone number problems, regional restrictions or version errors, account has been bound or blocked, and multiple failed attempts or system errors. 1. The mobile phone number must be valid and can receive verification codes. Some virtual numbers are not available. You can try using the local SIM card and confirm the country code. 2. Download the correct version according to the region where you are located, and overseas users should use the international version. 3. If your mobile phone number has been used by others or your device is associated with another account, you can try logging in or contacting customer service to solve the problem. 4. Multiple registration failures may trigger the security mechanism. It is recommended to wait for a while and try again, or check the network and time settings.

2025-07-06 comment 0  178

Course Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  654

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.