Found a total of 10000 related content
Strategies for Unit Testing and Integration Testing in Python
Article Introduction：Writing good unit tests and integration tests is the key to ensuring the quality of Python projects. Unit testing starts from small things to verify whether the function behavior meets expectations. It is recommended that each function covers normal, boundary and exceptional situations, and use mock to isolate external dependencies; integration testing starts from the overall perspective to verify whether the collaboration between modules is smooth, and test clients and test data are commonly used to simulate real processes; test coverage should not blindly pursue high scores, but should pay attention to core logic and avoid formalism. Mastering these key points can effectively improve code stability and maintainability.
2025-07-05
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550
Mastering JavaScript Closures with practical examples
Article Introduction：Closures are the mechanism in JavaScript for functions to remember their lexical scope, even if the scope has been executed. 1. Closures allow functions to access and remember external variables; 2. Commonly used in data encapsulation, function factories and asynchronous operations; 3. Examples include creating counters with private state; 4. Pay attention to traps in loops and asynchronous code when using them, such as using let or IIFE to solve closure capture problems. In short, closures are a combination of functions and their lexical environments, and are a key tool for building modules and maintaining states.
2025-07-08
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735
How to dispatch an action?
Article Introduction：To correctly use dispatchaction in Redux, you need to pay attention to the following points: 1. Select the correct dispatch method according to the usage scenario. UseDispatch() is commonly used in the component, and store calls store.dispatch() in a separate file; 2. The action must be an object containing the type field or generated by the actioncreator. If you use ReduxToolkit, you should call the generated actioncreator first; 3. Asynchronous operations require the introduction of middleware such as ReduxThunk or Saga, otherwise the dispatch function cannot be dispatched; 4. The type naming of action is recommended to adopt
2025-07-03
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192
What are Open Graph meta tags (og:title, og:image)?
Article Introduction：The function of OpenGraphmeta tag is to make web pages more beautiful and professional when sharing on social platforms. It defines attractive titles through og:title, such as changing the original title to a more attractive copy; og:image specifies the image displayed during sharing, and the recommended size is 1200x630 pixels and uses an absolute path; other commonly used tags include og:type specifying the page type, og:url declaration URL, og:description supplementary description, og:site_name displaying the website name. These tags need to be added to the web page to improve sharing performance.
2025-07-09
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606
Setting Up a Monorepo for Frontend Projects
Article Introduction：The key to using Monorepo to manage front-end projects is to choose the right tools, have clear structure and reasonable configuration. 1. Mainstream tools include Lerna (suitable for medium and large projects), Turborepo (fast build speed), Nx (powerful function) and pnpmworkspace (lightweight). New projects are recommended to start with pnpmworkspace Turborepo; 2. The project structure is commonly used to place shared modules for packages, apps to place specific applications, and unify naming specifications and directory structures; 3. Unify dependency management and construction processes, use workspace:* or link: to refer to local packages, build them uniformly through turborunbuild and use cache to improve efficiency; 4
2025-07-17
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405
Exploring the PHP File: Structure and Purpose
Article Introduction：The core function of PHP files is to handle dynamic web content, combining server-side logic and front-end display. A typical structure includes four steps: introducing configuration files, starting a session, loading an autoloader, and routing and distribution. PHP allows to embed dynamic content in HTML, which is suitable for building template pages, but it is recommended to use the template engine to separate logic from views. In the file introduction method, require is used to ensure that the script terminates in errors, and include is used for optional modules; it is recommended to use the _once version uniformly to prevent duplicate loading. The code organization recommends a separate file for each class, and classifies functions into tool classes or services, and uses namespaces to improve readability and automatic loading efficiency.
2025-07-16
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488
Steps to deploy a PHP environment on a cloud server
Article Introduction：The steps to deploy a PHP environment to a cloud server include: 1. Select the appropriate cloud service provider and server configuration; 2. Install PHP and commonly used extensions; 3. Configure the web server and site directory; 4. Set up the database and test the connection. First, you should choose a service provider with one-click mirror installation function. It is recommended to configure it at least 1 core 2G memory and 20GB system disk; secondly, use apt on Ubuntu to install PHP and necessary extensions, and verify whether the installation is successful; then put the project into the default website root directory and set permissions, or configure the virtual host as needed; finally install MySQL or MariaDB, create a database and user, and test whether the environment is running normally through the phpinfo() page. Pay attention to permissions and service retention in the whole process.
2025-06-27
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1027
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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809
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1437
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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1051
