Regular expression

A regular expression, often abbreviated as regex or regexp, is a powerful tool used in computer science and programming for searching and manipulating text. It consists of a sequence of characters that forms a search pattern. This pattern can be used to match specific strings of text, find particular sequences, or validate formats, such as email addresses or phone numbers. Regular expressions allow for flexible text processing, making them valuable in various applications, from data validation to text editing and search functionality. They enable users to perform complex text-based operations efficiently.