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

/
/
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"(?<=")(?:[A-Z][a-f0-9]{84}|[A-F0-9]{36})(?=")"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" $(document).ready(function() { vlive.tv.common.init("en", "VE", "5454545"); vlive.video.init("VOD", "45454", "VOD_ON_AIR", "NONE", "54454F", "6FABE43B271345FFCFA4D2028AF85F80C9F6", "V1294005a2aac29b64592ce9e636d68fb5506721c2ceac160d67a0488c1d25f3314bace9e636d68fb5506", [], "", "true", "false"); new vlive.video.list().init("suggest", "6", "/video/suggest/more", {videoSeq:"454545", channelCode:"54545"}); new vlive.video.list().init("upcoming", "6", "/video/upcoming/more", {videoSeq:"54545", playlistSeq:"", channelCode:"5454545"}); vlive.tv.live.thumb.handler.init("https://vlive-thumb.pstatic.net"); vlive.tv.share.init("Some Title", "https://www.vlive.tv/video/xxxx", "https://v-phinf.pstatic.net/20190811_131/4509495095_JPEG/93e3a15d-bc43-11e9-a12f-5054343_43.jpg?type=a720_play", "shareVod_343434_4455457", "45454"); vlive.video.showShoppingBanner("4544343"); }); """# 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