Whois & Analysis for regular-expressions.info

A pattern language is a method of describing good design practices or patterns of useful organization within a field of expertise.

The term was coined by architect Christopher Alexander and popularized by his 1977 book A Pattern Language.

A regular expression, regex or regexp (sometimes called a rational expression) is, in theoretical computer science and formal language theory, a sequence of characters that define a search pattern.

Usually this pattern is then used by string searching algorithms for "find" or "find and replace" operations on strings.

A pattern, apart from the term's use to mean "", is a discernible regularity in the world or in a manmade design.

As such, the elements of a pattern repeat in a predictable manner.

A geometric pattern is a kind of pattern formed of geometric shapes and typically repeating like a wallpaper.

Information is that which informs.

In other words, it is the answer to a question of some kind.

It is thus related to data and knowledge, as data represents values attributed to parameters, and knowledge signifies understanding of real things or abstract concepts.

As it regards data, the information's existence is not necessarily coupled to an observer (it exists beyond an event horizon, for example), while in the case of knowledge, the information requires a cognitive observer.

In computer science, a reference is a value that enables a program to indirectly access a particular data, such as a variable or a record, in the computer's memory or in some other storage device.

The reference is said to refer to the datum, and accessing the datum is called dereferencing the reference.