Course Introduction：Many programmers like to talk about functional programming, but if you ask them if they have actually used it, most of the answers will be "no". The reason is simple: When we beginners in programming, we are taught to think in an imperative way, namely program flowcharts and steps. Therefore, this article will explain some important concepts of functional programming and how to write functional code in PHP. Key Points Functional programming treats calculations as evaluation of mathematical functions, and avoids state and mutable data, treating functions as first-class citizens. This means that functions can be used like values ??in imperative programming. Key concepts of functional programming include invariance (once defined, the value of a variable cannot be changed), recursion (used frequently due to invariance), pure functions (functions without side effects)
2025-02-24 comment 0 546
Course Introduction：Core points Bookmark applets are small JavaScript code embedded in browser bookmarks that enhance the functionality of a web browser and simplify the workflow of web developers. Bookmark applets have a wide range of uses, ranging from simple navigation tasks to more complex operations, such as modifying page content, analyzing page structure, and even automating tasks on the website. While bookmark applets are generally safe and reliable, they can cause namespace conflicts. This problem can be avoided by creating anonymous functions with its own variable scope as bookmark applets. For complex bookmark applets, there is a way to bypass the length limit of bookmarks in some browsers. The actual bookmark applet implementation can be used as external .js
2025-03-08 comment 0 1242
Course Introduction：Maintaining log integrity of DebianNode.js applications is critical, which helps monitor server status, troubleshoot issues, and optimize performance. The following steps and suggestions can effectively ensure log integrity: Choosing the appropriate log library is the first step. The following lists some commonly used options, each with its advantages and disadvantages: Winston: It is widely popular, supports multiple output methods, is flexible in configuration, and is easy to set the log storage location. Pino: is known for its speed and is suitable for applications with extremely high performance requirements. Bunyan: Comprehensive functions, default output JSON format logs, and provides command line tools for easy viewing. Roarr: Compatible with Node.js and browser environments, with a wide range of applications
2025-04-12 comment 0 387
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 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 comment 0 777
Course Elementary 13744
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 82260
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 27436
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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