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

/
/
igm

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"(?im)^FB\-(.*) Facebook tüm arkadaşlarınızla").unwrap(); let string = "--b1_7c33580701799b858d1ab7d78f876b33 Content-Type: text/plain; charset=\"UTF-8\" Content-Transfer-Encoding: quoted-printable ======================================== Hesabınızı Onaylayın https://www.facebook.com/n/?confirmemail.php&e=ezgiaktas65523%40yandex.com&c=90430&cuid=AYg8uAvR_v-5IscpmGkQTZhaG1EPhI8Y5GtW1JV-yZuIAOk-NiUOuXy07pvpNCqTzaXAB0dPssMGkOyM1NXVnfKGZ8D62Y_14iBmqh_Gb3EX0VrFwlm3vb6IjP5b13QKlwY&aref=1642527518851633&medium=email&mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&n_m=ezgiaktas65523%40yandex.com ======================================== Merhaba Ezgi, Merhaba Ezgi, Yakın zamanda Facebook'a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın. Teşekkürler, Facebook ekibi Şu onay kodunu girmeniz istenebilir: FB-90430 Facebook tüm arkadaşlarınızla iletişim kurmanıza ve iletişimde kalmanıza yardımcı olur. Facebook'a katıldıktan sonra fotoğraflar paylaşabilir, etkinlikler planlayabilir ve daha fazlasını yapabilirsiniz. ======================================== İsteğiniz üzerine bu mesaj ezgiaktas65523@yandex.com adresine gönderilmiştir. Meta Platforms, Inc., Attention: Community Support, 1 Facebook Way, Menlo Park, CA 94025 Hesabınızı güvende tutabilmek için lütfen bu e-postayı iletmeyin. Daha fazla bilgi almak için aşağıdaki bağlantıya tıklayın. https://www.facebook.com/email_forward_notice/?mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2 --b1_7c33580701799b858d1ab7d78f876b33 Content-Type: text/html; charset=\"UTF-8\" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional //EN\"><html><head><title>Facebook</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /><style nonce=\"O2FMxb3p\">@media all and (max-width: 480px){*[class].ib_t{min-width:100% !important}*[class].ib_row{display:block !important}*[class].ib_ext{display:block !important;padding:10px 0 5px 0;vertical-align:top !important;width:100% !important}*[class].ib_img,*[class].ib_mid{vertical-align:top !important}*[class].mb_blk{display:block !important;padding-bottom:10px;width:100% !important}*[class].mb_hide{display:none !important}*[class].mb_inl{display:inline !important}*[class].d_mb_flex{display:block !important}}.d_mb_show{display:none}.d_mb_flex{display:flex}@media only screen and (max-device-width: 480px){.d_mb_hide{display:none !important}.d_mb_show{display:block !important}.d_mb_flex{display:block !important}}.mb_text h1,.mb_text h2,.mb_text h3,.mb_text h4,.mb_text h5,.mb_text h6{line-height:normal}.mb_work_text h1{font-size:18px;line-height:normal;margin-top:4px}.mb_work_text h2,.mb_work_text h3{font-size:16px;line-height:normal;margin-top:4px}.mb_work_text h4,.mb_work_text h5,.mb_work_text h6{font-size:14px;line-height:normal}.mb_work_text a{color:#1270e9}.mb_work_text p{margin-top:4px}</style></head><body style=\"margin:0;padding:0;\" dir=\"ltr\" bgcolor=\"#ffffff\"><table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\" id=\"email_table\" style=\"border-collapse:collapse;\"><tr><td id=\"email_content\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;background:#ffffff;\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"20\" style=\"line-height:20px;\" colspan=\"3\">&nbsp;</td></tr><tr><td height=\"1\" colspan=\"3\" style=\"line-height:1px;\"><span style=\"color:#FFFFFF;font-size:1px;opacity:0;\"> Merhaba Ezgi, Yakın zamanda Facebook&#039;a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın. </span></td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"15\" style=\"line-height:15px;\" colspan=\"3\">&nbsp;</td></tr><tr><td width=\"32\" align=\"left\" valign=\"middle\" style=\"height:32;line-height:0px;\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYi4LuOy_ckOKC3zv727NlHC4n3RHSVRSuELgJFpM3cd5wOLDrjkgOLoFHhhX2kHE6Ja11nj2zM8ZY_lyF3vj5YimJpGk0OmQUxoHDrzg7rm8jLHpHoIVIsYgxeuDEOPiPo&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;\"><img src=\"https://static.xx.fbcdn.net/rsrc.php/v3/yP/r/nblMrq1jYuK.png\" width=\"32\" height=\"32\" style=\"border:0;\" /></a></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td width=\"100%\" style=\"\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYi4LuOy_ckOKC3zv727NlHC4n3RHSVRSuELgJFpM3cd5wOLDrjkgOLoFHhhX2kHE6Ja11nj2zM8ZY_lyF3vj5YimJpGk0OmQUxoHDrzg7rm8jLHpHoIVIsYgxeuDEOPiPo&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:19px;line-height:32px;\">İşlem Gerekiyor: Facebook Hesabınızı Onaylayın</a></td></tr><tr style=\"border-bottom:solid 1px #e5e5e5;\"><td height=\"15\" style=\"line-height:15px;\" colspan=\"3\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Merhaba Ezgi,</span></td></tr><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Yakın zamanda Facebook&#039;a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın.</span></td></tr><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"2\" style=\"line-height:2px;\" colspan=\"3\">&nbsp;</td></tr><tr><td class=\"mb_blk\" style=\"\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYg0xJuCFwQ3yz6hC7VX8E7ZbfHFvrpgsPhC-qSCK0HaZRGZY0HTI4G9Uj1E2_nHluClUBZVVrcjQkSl7aOi6kP6HnTXI2WZa81c0HcbtpCg5S2UcHQp8EctLRGt0D-56tg&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #344c80;box-shadow:inset 0 1px 1px rgba(255, 255, 255, 0.1),0 1px 0 rgba(0, 0, 0, 0.1);background:#4c649b;padding:7px 16px 11px 16px;\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYg0xJuCFwQ3yz6hC7VX8E7ZbfHFvrpgsPhC-qSCK0HaZRGZY0HTI4G9Uj1E2_nHluClUBZVVrcjQkSl7aOi6kP6HnTXI2WZa81c0HcbtpCg5S2UcHQp8EctLRGt0D-56tg&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;display:block;\"><center><font size=\"3\"><span style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;white-space:nowrap;font-weight:bold;vertical-align:middle;color:#ffffff;text-shadow:0 -1px 0 #415686;font-size:14px;line-height:14px;\">Hesabınızı&nbsp;Onaylayın</span></font></center></a></td></tr></table></a></td><td width=\"100%\" class=\"mb_hide\" style=\"\"></td></tr><tr style=\"\"><td height=\"32\" style=\"line-height:32px;\" colspan=\"3\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Şu onay kodunu girmeniz istenebilir:</span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\"><center><table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"font-size:11px;font-family:LucidaGrande,tahoma,verdana,arial,sans-serif;padding:10px;background-color:#f2f2f2;border-left:1px solid #ccc;border-right:1px solid #ccc;border-top:1px solid #ccc;border-bottom:1px solid #ccc;\">FB-90430</td></tr></table></center></span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:14px;line-height:19px;color:#898f9c;\">Facebook tüm arkadaşlarınızla iletişim kurmanıza ve iletişimde kalmanıza yardımcı olur. Facebook&#039;a katıldıktan sonra fotoğraflar paylaşabilir, etkinlikler planlayabilir ve daha fazlasını yapabilirsiniz.</span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"left\" style=\"border-collapse:collapse;\"><tr style=\"border-top:solid 1px #e5e5e5;\"><td height=\"19\" style=\"line-height:19px;\">&nbsp;</td></tr><tr><td style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\">İsteğiniz üzerine bu mesaj <a href=\"mailto:ezgiaktas65523&#064;yandex.com\" style=\"color:#3b5998;text-decoration:none;\">ezgiaktas65523&#064;yandex.com</a> adresine gönderilmiştir.<br />Meta Platforms, Inc., Attention: Community Support, 1 Facebook Way, Menlo Park, CA 94025</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;;font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\">Hesabınızı güvende tutabilmek için lütfen bu e-postayı iletmeyin. <a style=\"color:#3b5998;text-decoration:none;\" href=\"https://www.facebook.com/email_forward_notice/?mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2\">Daha Fazla Bilgi Alın</a></span></td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr style=\"\"><td height=\"20\" style=\"line-height:20px;\" colspan=\"3\">&nbsp;</td></tr></table><span style=\"\"><img src=\"https://www.facebook.com/email_open_log_pic.php?cn=DHOpBllDo3&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2\" style=\"border:0;width:1px;height:1px;\" /></span></td></tr></table></body></html> --b1_7c33580701799b858d1ab7d78f876b33--"; // 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/