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

re = /^SUMME \/ W;\d{1,3};;\d{1,3};\d{1,3};\d{1,3};\K\d{1,3}/m str = '02.03.;38;;;3;1;42; 03.03.;36;;;3;;39; 04.03.;51;;14;9;1;75; 05.03.;70;;9;9;;88; 06.03.;26;;;2;;28; SUMME / W;221;;23;26;2;272; 09.03.;35;;10;6;1;52; 10.03.;50;;3;4;;57; 11.03.;48;;4;8;;60; 12.03.;35;;;4;1;40; 13.03.;15;;;3;;18; SUMME / W;183;;17;25;2;227; 16.03.;23;;7;2;1;33; 17.03.;36;;1;3;;40; 18.03.;36;;;8;;44; 19.03.;34;;;2;;36; 20.+21.03.;22;;4;3;;29; SUMME / W;151;;12;18;1;182; 23.03.;38;;4;4;1;47; 24.03.;26;;4;5;;35; 25.03.;24;;7;5;;36; 26.03.;22;;;3;;25; 27.+28.03.;4;;;2;;6; SUMME / W;114;;15;19;1;149;' # Print the match result str.scan(re) do |match| puts match.to_s end

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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html