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email format control

Match any url in text or html (http, https)

Validates subdomain, root domain, and wild card domains

Case insensitive match the whole word betwween \bword\b

This regular expression is build from the description of NINO number of GOV.UK,

Visual tag and Back tag cannot more than 15 characters or only can contain uppercase, lowercase, space and dash.

Convert camelCase to snake_case def camelCase2snake_case(txt): """ Convert camelCase to snake_case https://regex101.com/library/wUcSv4...

For example, using `Carl-bot to dump members of the @everyone role ordering highest of id`: `!dump @everyone %i:%u -o id` Example of return: 498984530968051713:lanjt#2129 ......

example

Extract URL parts only named capturing groups

It needs a major modification, since matching an integer is required. The accepted answer \d+ involves only "positive" integers. But -333 or +777 are also integers, which leads to two possible solutions with the last one being the most accurate: -?\d+ : The hyphen (optional minus sign) and a digit...

This RegEx removes unused elements such as inline comments and blank lines in python code. This will save you tokens and time when using GPT-3+ or ChatGPT to help code and debug.

Accomodate for Discord's username changeover and match against either the old username or the new username. But only one or the other. Match: CesarHvl#9000 cesarhvl cesar.hvl...

Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want

The best way to parse URL via Regex. This can be used in javascript, PHP, etc.

Validates a streetname + housenr + extension Somestreet 12 b