URL shortening is a technique in which a URL may be made substantially shorter in length and still direct to the required page.

Applying one function to the result of another is known as function composition: `(f.g)(x) = f(g(x))`

AMPL is an algebraic modeling language for mathematical optimization. It supports a wide range of problems such as linear, quadratic and nonlinear problems in continuous and discrete variables and is connected to most solvers.

Microsoft PixelSense is a large-touchscreen computer platform released by Microsoft in 2008. Applications for PixelSense are developed in .NET using either WPF or XNA for the graphical interfaces.

When coordinating updates from multiple database sessions, optimistic locking is a strategy that assumes all updates can complete without conflict. It does not hold locks on any records while the user is editing, but checks to see if any other edits have occurred when the user tries to commit the changes. If two sessions try to edit the same data, the second one to commit will be rejected and have to redo the change. Also see pessimistic locking.

System programming is the activity of computer programming system software. The primary distinguishing characteristic of systems programming when compared to application programming is that application programming aims to produce software which provides services to the user, whereas systems programming aims to produce software which provides services to the computer hardware.

This tag refers to a situation in which you cannot access a protected system, file, database, etc. you would normally have access to because you cannot remember the password used to protect it.

The methods declared by the UIScrollViewDelegate protocol allow the adopting delegate to respond to messages from the UIScrollView class and thus respond to, and in some affect, operations such as scrolling, zooming, deceleration of scrolled content, and scrolling animations.

Message passing is a data transfer mechanism that is used in various forms in a number of programming languages

Beanstalkd is a simple, fast work queue.