Detects UK postcodes (minimal edge cases)

regex for user name with criteria: Minimum 2 character Maximum 30 character Character must be alphanumeric, except first character is alphabetical Character "_" and "." is allowed once between first and last character

This regex matches i18next library resource keys

Simple search of string length with the regexp

Match a single character present in the list below [6-9] 6-9 matches a single character in the range between 6 (index 54) and 9 (index 57) (case sensitive) Match a single character present in the list below [0-9] {9} matches the previous token exactly 9 times 0-9 matches a single character in the ra...

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Regex that identifies unescaped double quotes in strings

replace url that has a hash or slash with slash

test

192.168.254.1 match 0.0.0.0 match 01.01.01.01 does not match 255.255.255.255 match 255.0.0.0 match 0.0.0.256 does not match

must use at least three of the four available character types: lowercase letters, uppercase letters, numbers, and symbols.

Extract the numerical ID of a VK Commmunity fromit's wall url.

用例の検索のために使用した正規表現です。

Attempting to match valid US phone number formates

match an group in re.sub pattern but no replace it !

Calcolo 1° indirizzo mail da stringa con indirizzo fisso.

regex for get video id in link

get files extension

The regular expression separates the beginning and end of the tag, as well as everything between them into separate groups.

Find string a string not withing quote