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

@
@
gs

Test String

Code Generator

Language

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#"(?s)<strong>\s*([\d.]+)\s*<small style="color:white;">"#).unwrap(); let string = " <div class=\"row\"> <div class=\"col-xs-12 col-sm-10 col-sm-offset-1 col-md-8 col-md-offset-2\"> <div> <h2 class=\"heading-large\"> <strong> 61312.3 <small style=\"color:white;\">UAH</small> </strong> <small><span class=\"glyphicon glyphicon-arrow-down text-danger\"></span></small> </h2> <br> <!--<a href=\"#\" class=\"showRateDetail\" style=\"color:#BFECFF;\">Подробности конвертации <span class=\"caret_blue\"></span></a>--> <div> <div class=\"col-xs-12\" style=\"margin-left:0px;padding-left:0px;padding-top:10px;\"> <table class=\"table table-condensed\" style=\"opacity:0.7;\"> <thead> <tr align=\"left\"> <th>Биржа</th> <th>Курс</th> <th>Суточный объем</th> </tr> </thead> <tbody> <tr align=\"left\"> <td><a href=\"/exchange/exmo/\" style=\"color:inherit;\">Exmo</a></td> <td>61649.99999999</td> <td> <div class=\"progress\" style=\"opacity:0.6;\"> <div class=\"progress-bar progress-bar-info\" role=\"progressbar\" aria-valuenow=\"53.68\" aria-valuemin=\"0\" aria-valuemax=\"100\" style=\"width: 53.68%;\"> <span style=\"color:#004F70;padding-left:5px;\">17</span> </div> </div> </td> </tr><tr align=\"left\"> <td><a href=\"/exchange/kuna/\" style=\"color:inherit;\">Kuna</a></td> <td>60921.00000000</td> <td> <div class=\"progress\" style=\"opacity:0.6;\"> <div class=\"progress-bar progress-bar-info\" role=\"progressbar\" aria-valuenow=\"46.32\" aria-valuemin=\"0\" aria-valuemax=\"100\" style=\"width: 46.32%;\"> <span style=\"color:#004F70;padding-left:5px;\">15</span> </div> </div> </td> </tr> <tr align=\"left\"> <td colspan=\"2\"> <b>Общий объем</b> </td> <td> <b>33 BTC</b> </td> </tr> <tbody> </table> </div> </div> </div> </div> </div> "; // 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/