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Tags

A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

For questions regarding programming in ECMAScript (JavaScript/JS) and its various dialects/implementations (excluding ActionScript). Please include all relevant tags on your question; e.g., [node.js],…
2149635 questions
a high-level programming language. Use this tag when you're having problems using or understanding the language itself. This tag is rarely used alone and is most often used in conjunction with…
1743972 questions
a multi-paradigm, dynamically typed, multipurpose programming language. It is designed to be quick to learn, understand, and use, and enforce a clean and uniform syntax. Please note that Pyt…
1624252 questions
a high level, statically typed, multi-paradigm programming language developed by Microsoft. C# code usually targets Microsoft's .NET family of tools and run-times, which…
1456897 questions
a widely used, high-level, dynamic, object-oriented, and interpreted scripting language primarily designed for server-side web development. Used for questions about the PHP language.
1386709 questions
Google's mobile operating system, used for programming or developing digital devices (Smartphones, Tablets, Automobiles, TVs, Wear, Glass, IoT). For topics related to Android, use Android-s…
1317689 questions
the markup language for creating web pages and other information to be displayed in a web browser. Questions regarding HTML should include a minimal reproducible ex…
1045730 questions
a JavaScript library, consider also adding the JavaScript tag. jQuery is a popular cross-browser JavaScript library that facilitates Document Object Model (DOM) traversal, event handling…
1004855 questions
a general-purpose programming language. It was originally designed as an extension to C and has a similar syntax, but it is now a completely different language. Use this tag for questions about…
707926 questions
a representation style sheet language used for describing the look and formatting of HTML (HyperText Markup Language), XML (Extensible Markup Language) documents and SV…
699986 questions
the mobile operating system running on the Apple iPhone, iPod touch, and iPad. Use this tag [ios] for questions related to programming on the iOS platform. Use the related tags [objective-c] an…
647989 questions
a free, open source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL). DO NOT USE this tag for other DBs such as SQL Server, SQLite etc. Those are diff…
615778 questions
a language for querying databases. Questions should include code examples, table structure, sample data, and a tag for the DBMS implementation (e.g. MySQL, PostgreSQ…
574712 questions
a free, open-source programming language and software environment for statistical computing, bioinformatics, visualization, and general computing. Please provide minimal and reproducible example(…
382573 questions
an event-based, non-blocking, asynchronous I/O runtime that uses Google's V8 JavaScript engine and libuv library. It is used for developing applications that make heavy use of the ability t…
367544 questions
a Microsoft web application development framework that allows programmers to build dynamic web sites, web applications and web services. It is useful to use this tag in conjunction with the…
361106 questions
an ordered linear data structure consisting of a collection of elements (values, variables, or references), each identified by one or more indexes. When asking about specific variants of a…
352418 questions
a general-purpose programming language used for system programming (OS and embedded), libraries, games and cross-platform. This tag should be used with general questions concerning the C language…
348933 questions
an open source full-stack web application framework written in Ruby. It follows the popular MVC framework model and is known for its "convention over configuration" approach to applic…
323195 questions
a serializable data interchange format intended to be machine and human readable. Do not use this tag for native JavaScript objects or JavaScript object literals. …
309441 questions
Do NOT use for questions about .NET Core - use [.net-core] instead. The .NET framework is a software framework designed mainly for the Microsoft Windows operating system. It includes an implementation…
304154 questions
a relational database management system (RDBMS). Use this tag for all SQL Server editions including Compact, Express, Azure, Fast-track, APS (formerly PDW) and Azure SQL DW. Do…
297997 questions
should be used only on questions that are about Objective-C features or depend on code in the language. The tags [cocoa] and [cocoa-touch] should be used to ask about Apple's frameworks or cl…
291148 questions
a safe, fast, and expressive general-purpose programming language developed by Apple Inc. for its platforms and Linux. Swift is open-source. Use the tag only for questions about language feat…
286462 questions
a JavaScript library for building user interfaces. It uses a declarative, component-based paradigm and aims to be both efficient and flexible.
273372 questions
For questions about Python programming that are specific to version 3+ of the language. Use the more generic [python] tag on all Python questions, and only add this one if your question is version-spe…
267760 questions
Use for questions about AngularJS (1.x), the open-source JavaScript framework. Do NOT use this tag for Angular 2 or later versions; instead, use the [angular] tag.
261855 questions
an open-source server-side web application framework written in Python. It is designed to reduce the effort required to create complex data-driven websites and web applications, with a speci…
255427 questions
Questions about Angular (not to be confused with AngularJS), the web framework from Google. Use this tag for Angular questions which are not specific to an individual version. For the older AngularJS …
242301 questions
Only for questions on programming against Excel objects or files, or complex formula development. You may combine the Excel tag with VBA, VSTO, C#, VB.NET, PowerShell, OLE automation, and other progra…
238829 questions
Regular expressions provide a declarative language to match patterns within strings. They are commonly used for string validation, parsing, and transformation. Because regular expressions are not full…
236079 questions
unless you are addressing Apple's iPhone and/or iPod touch specifically. For questions not dependent on hardware, use the tag [ios]. More tags to consider are [xcode] (but only if …
220867 questions
a multi-platform open-source, dynamic object-oriented interpreted language. The [ruby] tag is for questions related to the Ruby language, including its syntax and its libraries. Ruby on Rails …
217308 questions
a technique for creating interactive website user interfaces without the traditional web page refresh or reload. It uses asynchronous data exchange between cl…
213773 questions
LINUX QUESTIONS MUST BE PROGRAMMING RELATED. Use this tag only if your question relates to programming using Linux APIs or Linux-specific behavior, not just because you happen to run your code on L…
199732 questions
a structured document format defining text encoding rules. When using this tag include additional tags such as programming language, tool sets, XML technologies bei…
199146 questions
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