C++17 is the name of the C++ standard approved in 2017. It builds upon the previous C++14 standard, improving the core language and standard library, and adding a few new language features.

A Web crawler (also known as Web spider) is a computer program that browses the World Wide Web in a methodical, automated manner or in an orderly fashion. Other terms for Web crawlers are ants, automatic indexers, bots, Web spiders, Web robots, or – especially in the FOAF community – Web scutters.

Location is a specific position in physical space, e.g. a point on the surface of the Earth described using latitude and longitude coordinates. This tag should NOT be used for questions related to the position of a virtual element e.g. position of a pixel on a bitmap or position of a layout element on UI (use [position] tag in that cases).

log4j is a popular Java-based logging utility. It is a project of the Apache Software Foundation and is licensed under The Apache Software License, Version 2.0

Library to create and manipulate PDF documents in Java and C#. Use this tag for code using iText versions up to 5.5.x. For iText versions from 7.0.0 onwards a separate tag "itext7" is available. Remember to also add the tag for the language you're using.

Erlang is a general-purpose, garbage-collected programming language and runtime environment, with built-in support for concurrency, distribution and fault tolerance.

The time complexity of an algorithm quantifies the amount of time taken by an algorithm to run as a function of the size of the input to the problem. The time complexity of an algorithm is commonly expressed using big O notation, which suppresses multiplicative constants and lower order terms.

Telerik is a vendor of development, team productivity, and automated testing tools, as well as UI components and content management solutions for Microsoft .NET.

A storyboard is a graphic organizer in the form of illustrations or images displayed in sequence for the purpose of pre-visualizing a motion picture, animation, motion graphic or interactive media sequence.

iOS 8 is the eighth version of Apple's iOS mobile operating system. It was announced at the company's Apple Worldwide Developers Conference (WWDC) on June 2, 2014 and was released to the public on September 17, 2014. The ios8 tag should be used for questions specific to Apple's iOS 8 operating system. General iOS questions should use the ios tag.

A pipe is an interprocess connection between file descriptors of two processes. A pipe is created with the POSIX pipe() function (from <unistd.h>). Shells create pipes between processes if the "|" symbol is used: "cmd1 | cmd2" directs the output of cmd1 to the input of cmd2. On Windows use CreatePipe(). This mechanism redirects standard input, standard output, and standard error into the calling process in .NET and Java.