Reinforcement learning is an area of machine learning and computer science concerned with how to select an action in a state that maximizes a numerical reward in a particular environment.

Pandoc is an open-source, command-line, universal document converter for converting between various markup formats.

A property in WPF and Silverlight that can be set through methods such as, styling, data binding, animation, and inheritance.

For programming problems relating to using any of the JetBrains tools such as ReSharper, RubyMine, etc. If the issue is related to JetBrains Toolbox, please use the [jetbrains-toolbox] tag instead. General computing questions about using the IDE would be better suited for Super User.

A report of the active stack frames at a certain point in time during the execution of a program.

The nullable tag is for issues relating to nullable members or types. A null is used to represent a missing or unknown value.

Converting an object, variable or value from one type to another to satisfy a type restriction, without specifically requesting that conversion through language syntax.

a fast and efficient open source image loading library for Android that wraps media decoding, memory and disk caching, and resource pooling into a simple and easy to use interface.

Fiddler (aka "Fiddler classic") is a .net based web debugging proxy, which allows you to log, examine, modify and replay HTTP/HTTPS traffic from your computer.

Unreal Engine 4 is a game engine created by Epic Games. Use this tag for programming related questions. For non-programming related questions, use https://gamedev.stackexchange.com/.

PuTTY is an open source SSH and Telnet client. Use this tag only if your question relates to *programming* PuTTY or using PuTTY-based APIs. Questions relating to using or troubleshooting PuTTY usage are off-topic.