A tag is a keyword or label that categorizes your question with other, similar questions.

DO NOT use this tag 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 the question is about the IDE itself), [swift], [objective-c] or [cocoa-touch] (but not [cocoa]). Please refrain from questions regarding the iTunes App Store or about iTunes Connect. If using C#, tag with [mono].
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XML (Extensible Markup Language) is a structured document format defining text encoding rules. When using this tag include additional tags such as programming language, tool sets, XML technologies being used, and other tags describing the environment of the problem posted. XML flexibility lends to a wide variety of uses for human and machine data transfer so be specific as to tools and libraries.
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Visual Basic for Applications (VBA) is an event-driven, object-oriented programming language for writing macros, used for the entire Office suite as well as other applications. VBA is not equivalent to VB.NET, or VBS; if you're working in Visual Studio use [vb.net]. If your question is specifically about programming any MS Office application, also use the appropriate tag: [excel], [ms-access], [ms-word], [outlook], [visio], or [ms-project].
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The Spring Framework is an open-source framework for application development on the Java platform. At its core is rich support for component-based architectures, and it currently has over twenty highly integrated modules.
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The Laravel framework is an open-sourced PHP web framework that allows developers to create dynamic and scalable web applications. The source code of Laravel is hosted on GitHub and released under the MIT license.
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The ASP.NET MVC Framework is an open source web application framework and tooling that implements a version of the model-view-controller (MVC) pattern tailored towards web applications and built upon an ASP.NET technology foundation.
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A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information. Use this tag if you have questions about designing a database. If it is about a particular database management system, (e.g., MySQL), please use that tag instead.
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Consider using https://wordpress.stackexchange.com . This tag is for programming-specific questions about the WordPress content management system. Off-topic questions include those about theme development, WordPress administration, management best practices, server configuration, etc. These are best asked on https://wordpress.stackexchange.com .
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A string is a finite sequence of symbols, commonly used for text, though sometimes for arbitrary data.
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MongoDB is a scalable, high-performance, open source, document-oriented NoSQL database. It supports a large number of languages and application development platforms. Questions about server administration can be asked on https://dba.stackexchange.com.
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PostgreSQL is an open-source, relational database management system (RDBMS) available for all major platforms, including Linux, UNIX, Windows and OS X. Mention your version of Postgres when asking questions. Consider dba.stackexchange.com for questions concerning the administration or advanced features.
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Windows Presentation Foundation, or WPF, is a subsystem for rendering user interfaces in Windows-based applications.
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Use this tag for questions about the Flutter cross-platform UI toolkit. If your question is platform-specific, tag the platform as well (e.g., [android], [ios], etc.). You may also wish to include the [dart] tag for coding questions.
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Writing software specific to the Microsoft Windows operating system: APIs, behaviours, etc. GENERAL WINDOWS SUPPORT IS OFF-TOPIC. Support questions may be asked on https://superuser.com
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Xcode is Apple's integrated development environment (IDE). USAGE NOTE: Use this tag only for questions about the Xcode IDE itself, and not for general Mac or iOS programming topics. Use [cocoa] for Mac programming questions, and [cocoa-touch] or [iOS] or [Swift] for iOS programming questions.
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Amazon Web Services (AWS) is a cloud service that offers IaaS (Infrastructure as a Service) and SaaS (Software as a Service) solutions. Only questions about programming in relation to AWS are on-topic. General server help can be obtained at https://serverfault.com. The AWS tag is rarely used alone and will usually be used with other tags to more clearly define the topic of the question.
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This tag is for questions about scripts written for the Bash command shell. For shell scripts with syntax or other errors, please check them at https://shellcheck.net before posting them here. Questions about the interactive use of Bash are more likely to be on-topic on Unix & Linux Stack Exchange or Super User than on Stack Overflow.
154003 questions
Git is an open-source distributed version control system (DVCS). Use this tag for questions about Git usage and workflows. Do not use this tag for general programming questions that happen to involve a Git repository. Do not use this tag for GitHub/GitHub Actions questions that do not involve git usage; use [github] or [github-actions] instead. Do not use the [github] tag for Git-related issues just because a repository happens to be hosted on GitHub.
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Oracle Database is a Multi-Model Database Management System created by Oracle Corporation. Do NOT use this tag for other products owned by Oracle, such as Java and MySQL.
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A data frame is a 2D tabular data structure. Usually, it contains data where rows are observations and columns are variables and are allowed to be of different types (as distinct from an array or matrix). While "data frame" or "dataframe" is the term used for this concept in several languages (R, Apache Spark, deedle, Maple, the pandas library in Python and the DataFrames library in Julia), "table" is the term used in MATLAB and SQL.
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Use the Spring Boot tag for questions related to spring boot framework and the features it brings to your Web application. This includes questions about configuration, embedding of the Web servers, setting up metrics, health checks, externalized configuration etc. It does not include questions about the Web server itself, Java code running in your application, or standard spring components. Tag these questions with its own tags to get the best response!
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Firebase is a serverless platform for unified development of applications for mobile devices and for the web.
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The list tag may refer to: a linked list (an ordered set of nodes, each referencing its successor), or a form of dynamic array. Not to be used for HTML lists, use [html-lists] instead.
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Visual Basic.NET (VB.NET) is a multi-paradigm, managed, type-safe, object-oriented computer programming language. Along with C# and F#, it is one of the main languages targeting the .NET Framework. VB.NET can be viewed as an evolution of Microsoft's Visual Basic 6 (VB6) but implemented on the Microsoft .NET Framework. DO NOT USE this tag for VB6, VBA or VBScript questions.
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For questions regarding multi-threading, the ability of a computer or a program to perform work concurrently or asynchronously by utilizing multiple concurrent streams of execution (generally referred to as threads).
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Microsoft Azure is a Platform as a Service and Infrastructure as a Service cloud computing platform. Use this tag for programming questions concerning Azure. General server help can be obtained at Super User or Server Fault.
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React Native is a JavaScript library used to build native mobile apps using React. The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere.
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For questions about building and running Docker containers. DOCKER QUESTIONS MUST BE SPECIFICALLY RELATED TO SOFTWARE DEVELOPMENT. Suitable topics include Dockerfiles, Docker Compose, and architecture. As a rule of thumb, if your question is about something happening inside the container, it's probably on-topic here; if it's outside the container, it is probably off-topic.
133164 questions
Eclipse is an open source IDE and platform for building applications. There is a wide variety of plugins for various programming languages and other development-oriented tools (such as modeling, database browsing, etc.). This tag should only be used for questions specifically about the Eclipse IDE or platform, not for generalized (Java, etc.) programming topics.
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An algorithm is a sequence of well-defined steps that defines an abstract solution to a problem. Use this tag when your issue is related to algorithm design.
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macOS (formerly known as OS X or Mac OS X) is the desktop operating system from Apple, found on Macintosh computers. Use this tag only if your question relates to using macOS APIs or macOS-specific behavior, not because you happen to run your code on macOS. Questions relating to using or troubleshooting macOS are off-topic and belong in the Ask Different community instead.
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PowerShell is a cross-platform command line and scripting utility from Microsoft. Use this tag for questions about writing and executing PowerShell scripts ONLY. Programming questions specific to the cross-platform version PowerShell Core (Windows, macOS, and Linux) should be tagged [powershell-core]. Questions about system administration should be asked on Super User or Server Fault.
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Use this tag if you have a specific question about Visual Studio features and functionality. DO NOT use this tag on questions regarding code which merely happened to be written in Visual Studio. Consider tagging the exact technology area your question links to and also tagging a more specific version of Visual Studio. Please mention your exact VS version, edition, and update level in your question. DO NOT use this tag on questions regarding VS Code.
113889 questions
The image tag is for questions related to the loading, formatting, saving, compression, and display of images in the context of source code. This tag should also be used for assistance using various image libraries. Questions about specific image formats should include the tags for those formats. Include tags to mention if the question relates to format conversion, processing, etc.
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A form is essentially a container that can be used to hold any amount of any subset of several types of data. HTML forms are used to pass data to a server. VB and C# forms are the windows used to interact with the user.
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NumPy is one of the many modules in Python that adds support of large multidimensional arrays and matrixes, along with a large library of high-level mathematical functions for operations with these arrays. --- To install the numpy module enter this command line: ~~~ python -m pip install numpy ~~~ It may require the wheel and pip package.
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