The regular expression pattern \w+ matches one or more word characters; the regular expression engine will continue to add characters to the match until it encounters a non-word character, such as a white-space character. C# Copy Run using System; using System.Collections; using System.Text....
A character in the range: a-z or A-Z [a-zA-Z] Any single character . Alternate - match either a or b a|b Any whitespace character \s Any non-whitespace character \S Any digit \d Any non-digit \D Any word character \w
And similarly, for any character that is not a word, use the capitalized version \W. Here are some helpful shortcuts: Special characterDescription \w A word character (A-Z, a-z or _) \W A non-word character \s A whitespace character (tab, linefeed, carriage return, etc) \S A ...
A regular expression (REGEX) is a character sequence defining a search pattern. A REGEX pattern can consist of literal characters, such as “abc”, or special characters, such as “.”, “", “+”, “?”, and more. Special characters have special meanings and functions in REGEX. A REGE...
\B Negated word boundary assertion \b{start}, \< Start-of-word boundary assertion \b{end}, \> End-of-word boundary assertion \b{start-half} Half of a start-of-word boundary assertion \b{end-half} Half of an end-of-word boundary assertion \123 Octal character code, up to three di...
\bBegin the match at a word boundary. aMatch the character "a". \w*Match zero, one, or more word characters. \bEnd the match at a word boundary. Remarks TheMatch(String, String, RegexOptions)method returns the first substring that matches a regular expression pattern in an input string....
3. Shorthand Character Sets There are a number of convenient shorthands for commonly used character sets/ regular expressions: ShorthandDescription . Any character except new line \w Matches alphanumeric characters: [a-zA-Z0-9_] \W Matches non-alphanumeric characters: [^\w] \d Matches digits:...
character_class() digit() digits() element() expr() letter() literal() name() non_capture() non_close_paren() non_close_parens() number() octal_char() octal_digit() option_flag() option() parse() quantifier_type() quantifier() shared_atom() shared_lit...
using System; using System.Reflection; using System.Text.RegularExpressions; public class Example { public static void Main() { // Match two or more occurrences of the same character. string pattern = @"(\w)\1+"; // Use case-insensitive matching. var rci = new RegexCompilationInfo(patter...
public static ruleNames: string[] = [ "parse", "alternation", "expr", "element", "quantifier", "quantifier_type", "character_class", "capture", "non_capture", "option", "option_flag", "atom", "cc_atom", "shared_atom", "literal", "cc_literal", "shared_literal", "number", "...