The replacement string, " ", replaces them with a single space character. C# Copy Run using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string input = "This is text with far too much " + "white space."; string pattern = "\\s+"...
\sReturns a match where the string contains a white space character"\s"Try it » \SReturns a match where the string DOES NOT contain a white space character"\S"Try it » \wReturns a match where the string contains any word characters (characters from a to Z, digits from 0-9, an...
\s Whitespace (\p{White_Space}) \S Not whitespace \w Word character (\p{Alphabetic} + \p{M} + \d + \p{Pc} + \p{Join_Control}) \W Not word characterASCII character classesThese classes are based on the definitions provided in UTS#18:Expand...
+ "instance of a class or structure can\n" + "be instantiated. "; string pattern = "^.*$"; string replacement = "\n$&"; Regex rgx = new Regex(pattern, RegexOptions.Multiline); string result = String.Empty; Match match = rgx.Match(input); // Double space all but the first ...
Not one of- Matches a single character not present in the set. Anything- Matches any character, except for\n. Any word character- Matches any letters and numbers. Whitespace- Matches one white space. Starts with- Initiates the search where the line starts. ...
Any character except a space \S Lookarounds Preemptive inspections (?=) (?!) Retrospective inspections (?<=) (?<!) ✍️ Practice 📚 Additional materials 🔍 Basic ussage Let's take a random text as an example. Imagine that we need to find all the words Park in this text. Th...
This command may not work if file is created on Windows system. To remove blank lines from a file which is created on other systems except *nix, use'^[[:space:]]*$'regular expression. How to use multiple regular expressions with grep command ...
\wmatches any letter, digit and underscore character \smatches a whitespace character — that is, a space or tab \tmatches a tab character only From what we’ve learned so far, we can write regular expressions like this: \w{5}matches any five-letter word or a five-digit number ...
To ignore all unescaped white space characters and comments (denoted by the un-escaped hash#character and the next new-line character) in the pattern, include thesoption in theoptionsfield: // Specify xin the optionsfield {$regexMatch:{input:"$description",regex:/line/,options:"x"} } ...
2.2.1 Negated Character Sets In general, the caret symbol represents the start of the string, but when it is typed after the opening square bracket it negates the character set. For example, the regular expression [^c]ar means: any character except c, followed by the character a, followe...