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

/
/
gmi

Test String

Code Generator

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(?mi){\s*file\s*:\s*["']\s*(http[^"']+\.mp4)"#).unwrap(); let string = "<!DOCTYPE html> <html> <head> <meta charset=\"UTF-8\" /> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1\" /> <link href='https://fonts.googleapis.com/css?family=Hanuman' rel='stylesheet' type='text/css'> <link href=\"https://fonts.googleapis.com/css?family=Scada\" rel=\"stylesheet\"> <link href=\"jwplayer-7.12.8/skins/prime.min2.css\" rel=\"stylesheet\" type=\"text/css\" /> <script type=\"text/javascript\" src=\"jwplayer-7.12.8/jwplayer.js\"></script> <script type=\"text/javascript\">jwplayer.key=\"I9HOJrL1NmqruQ60as34wt34/23422dsdrwer==\";</script> </head> <body> <div id=\"picasa\" class=\"picasa\"></div> <script type=\"text/javascript\"> var playerInstance = jwplayer(\"picasa\"); playerInstance.setup({ id:'picasa', controls: true, displaytitle: true, flashplayer: \"//ssl.p.jwpcdn.com/player/v/7.12.5/jwplayer.flash.swf\", width: \"100%\", height: \"100%\", aspectratio: \"16:9\", fullscreen: \"true\", provider: 'http', autostart: false, image:'http://localhost/viral/viralvideo.jpg', sources: [{file:\"http://localhost/srt/43534234/viral022018SD.MP4\",label:\"SD\",type: \"video/mp4\"},{file:\"http://localhost/srt/43534234/viral022018HD.MP4\",label:\"HD\",type: \"video/mp4\",default: true}], sharing:{ link: \"\", code: \"\", heading: \"Share\", sites: [\"facebook\",\"twitter\",\"tumblr\",\"googleplus\",\"reddit\",\"linkedin\",\"interest\",\"email\"], }, sharing:{ link: \"\", code: \"\", heading: \"Share\", sites: [\"facebook\",\"twitter\",\"tumblr\",\"googleplus\",\"reddit\",\"linkedin\",\"interest\",\"email\"], }, tracks: [{ file: 'http://localhost/srt/viralvideo022018.srt', label: 'English', kind: 'captions', \"default\":true }], captions: { color: '#FFEB3B', fontSize: 14, fontFamily: 'Scada, Hanuman, sans-serif, Verdana, cursive', fontOpacity: 100, backgroundOpacity: 0, backgroundColor: '#000000', edgeStyle: 'raised', windowColor: '#000000', windowOpacity: 0 }, skin: { name: 'prime', }, }); </script> </body> </html>"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/