Explore: Regular Expressions

validation. Regular expression techniques are developed in theoretical computer science and formal language theory. The concept of regular expressions began

Perl Compatible Regular Expressions (PCRE) is a library written in C, which implements a regular expression engine, inspired by the capabilities of the

as the coincidence of regular and rational languages. Other authors simply define "rational expression" and "regular expressions" as synonymous and do

since version 2.13.0. ICU4J, the Java version, does not support regular expressions. C++ bindings were developed by Google and became officially part

of regular expressions. Globs do not include syntax for the Kleene star which allows multiple repetitions of the preceding part of the expression; thus

syntax parsing expressions as their concrete syntax. The two main kinds of parsing expressions not containing another parsing expression are individual

Stephen Cole Kleene) is a semiring that generalizes the theory of regular expressions: it consists of a set supporting union (addition), concatenation

writing regular expressions (RE, or regexes), and the interpreter contains an engine for matching strings to regular expressions. The regular-expression engine

brackets can be used for sets or ranges of characters to match. In regular expressions, the period (., also called "dot") is the wildcard pattern which

Chick Corea Expressions (Sarah Geronimo album), 2013 Expressions, an album by Jon Secada "Expression" (song), a song by Salt-n-Pepa Expressions, the annual