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 = #"<NewMarket sysname="SOCCER(.*?)ODD_EVEN"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" <NewMarket sysname="SOCCER_CORNERS_FIRST_HALF_DOUBLE_CHANCE" name="1st Half Corners Double Chance" voidRule="false" settleRule="[Period] &gt;= [HT]"> <Mappings> <OldMarket sysname="SOCCER_CORNERS_HALFTIME_DOUBLE_CHANCE" /> </Mappings> <MarketDefinition captionEn="1st Half Corners Double Chance" captionEl="Διπλή Ευκαιρία Κόρνερ Ημιχρόνου"> <Odds> <Bet code="1X" name="HomeDraw" captionEn="{HomeTeam} / Draw" settleRule="[HomeCorners1H] &gt;= [AwayCorners1H]" /> <Bet code="X2" name="DrawAway" captionEn="{AwayTeam} / Draw" settleRule="[HomeCorners1H] &lt;= [AwayCorners1H]" /> <Bet code="12" name="HomeAway" captionEn="{HomeTeam} / {AwayTeam}" settleRule="[HomeCorners1H] &gt; [AwayCorners1H] || [HomeCorners1H] &lt; [AwayCorners1H]" /> </Odds> </MarketDefinition> </NewMarket> <NewMarket sysname="SOCCER_CORNERS_ODD_EVEN" name="Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [FT]"> <Mappings> <OldMarket sysname="SOCCER_CORNERS_ODD_EVEN" /> </Mappings> <MarketDefinition captionEn="Match Corners Odd/Even" captionEl="Μονά Ή Ζυγά Κόρνερ Αγώνα"> <Odds> <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners] % 2) = 1" /> <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners] % 2) = 0" /> </Odds> </MarketDefinition> </NewMarket> <NewMarket sysname="SOCCER_CORNERS_FIRST_HALF_ODD_EVEN" name="1st Half Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [HT]"> <Mappings> <OldMarket sysname="SOCCER_CORNERS_FIRST_HALF_ODD_EVEN" /> </Mappings> <MarketDefinition captionEn="1st Half Odd/Even Corners" captionEl="Μονά Ή Ζυγά Κόρνερ 1ου Ημιχρόνου"> <Odds> <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners1H] % 2) = 1" /> <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners1H] % 2) = 0" /> </Odds> </MarketDefinition> </NewMarket> <NewMarket sysname="SOCCER_CORNERS_SECOND_HALF_ODD_EVEN" name="2nd Half Corners Odd/Even" voidRule="false" settleRule="[Period] &gt;= [FT]"> <Mappings> <OldMarket sysname="SOCCER_CORNERS_SECOND_HALF_ODD_EVEN" /> </Mappings> <MarketDefinition captionEn="2nd Half Odd/Even Corners" captionEl="Μονά Ή Ζυγά Κόρνερ 2ου Ημιχρόνου"> <Odds> <Bet code="1" name="Odd" captionEn="Odd" settleRule="([TotalCorners2H] % 2) = 1" /> <Bet code="0" name="Even" captionEn="Even" settleRule="([TotalCorners2H] % 2) = 0" /> </Odds> </MarketDefinition> </NewMarket> <NewMarket sysname="SOCCER_CORNERS_RESULT_NO_DRAW" name="Corners Draw No Bet" voidRule="[Period] &gt;= [FT] &amp;&amp; [HomeCorners] = [AwayCorners]" settleRule="[Period] &gt;= [FT] &amp;&amp; [HomeCorners] != [AwayCorners]"> <Mappings> <OldMarket sysname="SOCCER_CORNERS_RESULT_NO_DRAW" /> </Mappings> <MarketDefinition captionEn="Match Corners Draw no bet" captionEl="Νικητής Κόρνερ Αγώνα Ισοπαλία ΄Οχι Στοίχημα"> <Odds> <Bet code="1" name="Home" captionEn="{HomeTeam}" settleRule="[HomeCorners] &gt; [AwayCorners]" /> <Bet code="2" name="Away" captionEn="{AwayTeam}" settleRule="[HomeCorners] &lt; [AwayCorners]" /> </Odds> </MarketDefinition> </NewMarket> """# 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