A leap year is a year containing one additional day, which falls on Feb 29 in the Gregorian calendar.

The number of arguments given to the program, found as a parameter to main in some languages, notably C.

Anything related to mutators (a.k.a. setters, or mutator methods) in object oriented programming, i.e. instance methods whose exclusive purpose is to change (part of) the internal state of an object to a specific value, without performing substantial additional processing.. This may also refer to mutator functions in non-OO languages when OOP techniques are used to emulate OOP-like encapsulation.

Microsoft Dynamics AX 2012 R3 is an Enterprise Resource Planning (ERP) application. Use this tag for questions relating to this final update to the 2012 version, being replaced by Microsoft Dynamics AX 7. Do not use this tag regarding earlier versions or other ERP applications.

A clojure/clojurescript library for asynchronous programming.

Android 4.3 (API Level 18) is an updated version of Jelly Bean. New features include improved multi-user profiles and Bluetooth low-energy support.

Syntastic is a syntax checking plugin for the Vim editor that runs files through external syntax checkers and displays any resulting errors to the user.

CBCentralManager is an object used by CoreBluetooth on OS X and iOS to manage peripheral devices.

Android Backup Service is integrated with Android's data backup framework to perform data backup and restore for most devices running Android 2.2 or greater, using Google servers and a backup transport on the device.

The generation of barcode symbols (1d & 2D) on printed media.