Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • 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
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"[\u0027\u02B9\u02BB\u02BC\u02BE\u02C8\u02EE\u0301\u0313\u0315\u055A\u05F3\u07F4\u07F5\u1FBF\u2018\u2019\u2032\uA78C\uFF07]"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" ' - ‎0027 APOSTROPHE ʹ ‎- 02B9 MODIFIER LETTER PRIME ʻ ‎- 02BB MODIFIER LETTER TURNED COMMA ʼ ‎- 02BC MODIFIER LETTER APOSTROPHE ʾ - ‎02BE MODIFIER LETTER RIGHT HALF RING ˈ - ‎02C8 MODIFIER LETTER VERTICAL LINE ˮ - ‎02EE MODIFIER LETTER DOUBLE APOSTROPHE ́ ‎ - 0301 COMBINING ACUTE ACCENT ̓ - ‎0313 COMBINING COMMA ABOVE ̕ - ‎0315 COMBINING COMMA ABOVE RIGHT ՚ - ‎055A ARMENIAN APOSTROPHE ׳ - ‎05F3 HEBREW PUNCTUATION GERESH ߴ - ‎07F4 NKO HIGH TONE APOSTROPHE ߵ - ‎07F5 NKO LOW TONE APOSTROPHE ᾿ - ‎1FBF GREEK PSILI ‘ - ‎2018 LEFT SINGLE QUOTATION MARK ’ - ‎2019 RIGHT SINGLE QUOTATION MARK ′ - ‎2032 PRIME ꞌ - ‎A78C LATIN SMALL LETTER SALTILLO ＇ - ‎FF07 FULLWIDTH APOSTROPHE """# let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression