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

/
/
g

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#"<td align=\"left\">\s*(<a href=\"http:\/\/www.proxynova.com\/proxy-server-list\/port-\d+|\d+).*?\s*<\/td>"#).unwrap(); let string = "<table width=\"950\" class=\"table\" id=\"tbl_proxy_list\"> <thead> <tr> <th>Proxy IP</th> <th>Proxy Port</th> <th>Last Check</th> <th nowrap=\"nowrap\"><span title=\"Proxy Speed in bytes per second\">Proxy Speed</span></th> <th>Uptime</th> <th><span title=\"The location of that particular proxy.\">Proxy Country</span></th> <th>Anonymity </th> </tr> </thead> <tbody> <tr> <td align=\"left\"> <span class=\"row_proxy_ip\">220.225.87.129</span> </td> <td align=\"left\"> <a href=\"http://www.proxynova.com/proxy-server-list/port-8080\">8080</a> </td> <td align=\"left\"> <time class=\"icon icon-check timeago\" datetime=\"2016-03-14 12:58:53Z\"></time> </td> <td align=\"left\"> <div class=\"progress-bar\" data-value=\"7.7100404\" title=\"5855.0202\"></div> </td> <td style=\"text-align:center !important;\"> <span style=\"color:#009900;\">59%</span> </td> <td align=\"left\"> <img src=\"//www.proxynova.com/assets/images/blank.gif\" class=\"flag flag-in\" width=\"15\" height=\"11\" alt=\"IN\" /> <a href=\"/proxy-server-list/country-in/\">India <span class=\"proxy-city\"> - Chandannagar </span> </a> </td> <td align=\"left\"> <span class=\"proxy_transparent\" style=\"font-weight:bold; font-size:10px;\">Transparent</span> </td> </tr> <tr> <td align=\"left\"> <span class=\"row_proxy_ip\">220.225.87.129</span> </td> <td align=\"left\"> <a href=\"http://www.proxynova.com/proxy-server-list/port-8080\">8080</a> </td> <td align=\"left\"> <time class=\"icon icon-check timeago\" datetime=\"2016-03-14 12:58:53Z\"></time> </td> <td align=\"left\"> <div class=\"progress-bar\" data-value=\"7.7100404\" title=\"5855.0202\"></div> </td> <td style=\"text-align:center !important;\"> <span style=\"color:#009900;\">59%</span> </td> <td align=\"left\"> <img src=\"//www.proxynova.com/assets/images/blank.gif\" class=\"flag flag-in\" width=\"15\" height=\"11\" alt=\"IN\" /> <a href=\"/proxy-server-list/country-in/\">India <span class=\"proxy-city\"> - Chandannagar </span> </a> </td> <td align=\"left\"> <span class=\"proxy_transparent\" style=\"font-weight:bold; font-size:10px;\">Transparent</span> </td> </tr> <tr> <td align=\"left\"> <span class=\"row_proxy_ip\">220.225.87.129</span> </td> <td align=\"left\"> 80 </td> <td align=\"left\"> <time class=\"icon icon-check timeago\" datetime=\"2016-03-14 12:58:53Z\"></time> </td> <td align=\"left\"> <div class=\"progress-bar\" data-value=\"7.7100404\" title=\"5855.0202\"></div> </td> <td style=\"text-align:center !important;\"> <span style=\"color:#009900;\">59%</span> </td> <td align=\"left\"> <img src=\"//www.proxynova.com/assets/images/blank.gif\" class=\"flag flag-in\" width=\"15\" height=\"11\" alt=\"IN\" /> <a href=\"/proxy-server-list/country-in/\">India <span class=\"proxy-city\"> - Chandannagar </span> </a> </td> <td align=\"left\"> <span class=\"proxy_transparent\" style=\"font-weight:bold; font-size:10px;\">Transparent</span> </td> </tr> </tbody> </table>"; // 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/