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...

Notes: Do not forget to escape the $ by an additional $. Escaping ? like \? does not work. But you could use [?] instead End result should be like this: "traefik.http.middlewares.r6tt-dev-web.stripprefixregex.regex=^/[a-z0-9/]+[a-z0-9]+([?]+.*)?$$"...

Find all string matches with dir, one or more subdir, file name with optional extension. Common example with all capturing groups included: C://ProgramFiles/MyDir1/myDir2/file.ext

Find all string matches with dir, one or more subdir, file name with optional extension. Common example with all capturing groups included: ../../dir/SubDir1/SubDir2/file.ext ...

The is helpful for parsing the symbolic reference of a PHP class object for validation or just determining the type and target for the operator. The expression is intended for working with classes and class methods, so the value on the right of the Paamayim Nekudotayim :: will alway be regarded as ...

for quadratic equations ||ax^2+bx+c=d||

验证阿拉伯数字金额 "-999999999 ~ 999999999" ,小数点后面保留2位

Searches for the first list element in a graphql query, which allows for filtering and pagination, except for the group node

ผลิตภัณฑ์ส่งเสริมการขาย

Basic RegEx to catch ITU E.164 Formatted Telephone Numbers. Must include leading '+', first digit cannot be a zero, no other non-numeric characters -- with (optional) exception of Extensions denoted by ";ext=" and between 3 and 6 digits in the extension (adjust max to suit organization)

Regular expression to match atoms. See qbar.io/docs.html#expression-language-atom for more information.

Permite validar un número celular en colombia

Signed numbers with optional decimal part (comma or dot)