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.

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Use for questions about using Android Studio, an official IDE by Google targeted at Android app development. Do NOT use for questions about programming for Android in general; instead, use the [androi…
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the process of applying some order to a collection of items.
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a reference to a particular day represented within a calendar system, and consists of year, month and day.
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used to check data to make sure it fits whatever required specifications are set for it. Typically Validation is used in checking input data, and in verifying data before storage.
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a flexible Node.js web application framework, providing a robust set of features for building web applications.
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An endpoint of a bi-directional inter-process communication flow. This often refers to a process flow over a network connection, but by no means is limited to such. Not to be confused with WebSocket (…
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an open-source web development framework written in Ruby. Ruby on Rails follows the principle of convention over configuration, freeing you from having to re-invent things to stay pro…
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a tabular data structure. Usually, it contains data where rows are observations and columns are variables of various types. While "data frame" or "dataframe" is the term used for this …
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an application level network protocol that is used for the transfer of content on the World Wide Web.
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an open source distributed data processing engine written in Scala providing a unified API and distributed data sets to users. Use Cases for Apache Spark often are related to machine/d…
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Extensible Application Markup Language (XAML) is a declarative XML-based language used for initializing structured values and objects in various frameworks. When a question is about the usage of XAML…
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A layout defines the visual structure for a user interface, such as the UI for an activity, fragment or app widget.
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for questions specific to the 2008 version of Microsoft's SQL Server.
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a library for real time computer vision. When using this tag, please mention the OpenCV release you're working with (e.g. 3.4.6), and add a language specific ta…
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A framework for building Java web applications based on the Model-View-Controller (MVC) pattern. It promotes flexible and decoupled code from the underlying view technologies.
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a method of exchanging digital messages from a sender to one or more recipients. Posting to ask why the emails you send are marked as spam is off-topic for Stack Overflow.
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A DateTime object in many programming languages describes a date and a time of day. It can express either an instant in time or a position on a calendar, depending on the context in which it is used …
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a Java-based view technology running on the server machine which allows you to write template text in (the client side languages like HTML, CSS, JavaScript and so on) and int…
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a part of the .NET Framework that provides a unified programming model for rapidly building service-oriented applications.
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a programming paradigm using "objects": data structures consisting of data fields and methods together with their interactions.
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A dictionary (or map) in computer science is a data structure that maps keys to values such that given a key its corresponding value can be efficiently retrieved. FOR questions about mapping FUNCTIONS…
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for code that must compile as C++11 (not using any features introduced in C++14 or later).
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a graphical screen control or widget provided by UI libraries in a majority of modern operating systems to show items in a list form.
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Topics relating to application security and attacks against software. Please don't use this tag alone, that results in ambiguity. If your question is not about a specific programming problem, please …
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Parsing refers to breaking an artifact into its constituent elements and capturing the relationship between those elements. This tag isn't for questions about the self hosted Parse Platform (use the […
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YOU ARE DEVELOPING IN. TENSORFLOW SUPPORTS MORE THAN ONE LANGUAGE. TensorFlow is an open source library for machine learning and machine intelligence. It is …
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any entity that can be manipulated by commands in a programming language. An object can be a value, a variable, a function, or a complex data-structure. In object-oriented programming, an…
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an integrated development environment (IDE) from Microsoft. Use this tag only for questions arising from the use of this particular version of Visual Studio, and not about any co…
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The system through which people interact with a computer is called the "UI", which stands for "User Interface". This tag can be used for UI-related programming questions. Note that there's a separate …
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a control structure used by many programming languages to iterate over a range. It is a way of repeating statements a number of times until the loop ends. Depending on the language this …
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OFF-TOPIC. Support questions may be asked on https://askubuntu.com/. Ubuntu is a free desktop and server operating system based on Debian GNU/Linux. Note that this is for pro…
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a text file containing a series of commands that are executed by the command interpreter on MS-DOS, IBM OS/2, or Microsoft Windows systems.
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a cross-platform game engine with a built-in IDE developed by Unity Technologies.
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a language for rapid development of native Windows, macOS, Linux, iOS, and Android applications through use of Object Pascal. The name refers to the Delphi language as well as its libraries,…
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Data type that "points to" another value stored in memory. A pointer variable contains a memory address of some other entity (variable or function or other entity). This tag should be used for questio…
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is used in multiple contexts: generic programming (especially C++), and data/document generation using template engines. When using this tag on implementation heavy questions - tag t…