This regexp can be used to validate domain names in Golang. While it cannot enforce the 253 character limit (with optional trailing period not included) that can be easily done by a simple len(domain) <= 253 check as well. This can be used as-is in other languages, even with RE2 regex engine. If po...

Length of email address is an industry standard, lady "The format of email addresses is local-part@domain where the local part may be up to 64 characters long and the domain may have a maximum of 255 characters[2]—but the maximum of 256-character length of a forward or reverse path restricts the ent...

extract url such as http, https:, ftp and mailto from a string

For Month Verification Works for January / Jan / Jan.

Work in progress

Useful for phone number extraction

Matches all subdomains (specifically in group 2) excluding www

With this regex, is possible to strip som parts of response

Valid: 0.00 123.12 123,123,123.12 123,123,123,123.00 ...

Valid: +100.00% -100.00% +2.00% -22.00% +2.99%...

valid: benji_yang@basic.cn benji.yang@roolbox.com benji-yang@gmail.org invalid:...

This regex matches up with the word rape, even if accent marks are used.

Allowed URL patterns for Meetup.com events