Mathematical functions are a simple transformation from inputs to outputs. Given a set of parameters, a function performs a transformation based on these parameters, and returns the desired results. Because of their simple character, mathematical functions are a good analogy for what can be done by a computer. Since they are independent entities, functions can…
Hyperlinks are a powerful feature provided by web browsers. The original technologies designed for web promoted hyperlinks as the central mechanism for connecting pages in different sites. The concept of hyperlink is so important that it is central to the classifications used by search engines, such as Google with its page rank. Nonetheless, hyperlinks are badly…
Vim is a powerful text editor based on the venerable vi, originated with UNIX. Vim is nowadays a multi platform product. I use it on Mac OS X, Linux and Windows. In all these platforms it has a native look-and-feel, and offers all features that we came to expect from it. One of the things…