First pass at a way to find credit card data using regex.

Validates a File Path and makes sure the correct extension is at the end.

utf-8 hex. code armenian. Firs character regexp

This regex grabs all kinds of imgur links and groups them in meaningful names aswell. This way you have full flow-control in your python-scripts.

If you want to understand an SQL statement for Hibernate: this replaces the selected fields in an SQL statement generated by Hibernate by a shorthand, since you usually just care about the logic. E.g. it changes select foo0_.bla as bla1_3, foo0_.bar as bar1_3, foo0_.baz1_3 as baz1_3 from ... to sele...

Match nth occurence of the patterns in the inner parenthesis. Put nth that you want to match in the curly braces (here, {3}).

Validates Credit Card Numbers of different type. Supports Visa, MasterCard, American Express, Diners Club, Discover and JCB Taken from http://www.regular-expressions.info/creditcard.html If you want to support only a particular type, customise it based on following....

Validate IPv4 addresses using PCRE's recursion patterns. A shorter but less efficient alternative to https://regex101.com/r/wZ6oY5/1

use this to get value of any side of an equation. You can combine this with https://regex101.com/r/fH5kJ1/1

Detects valid Roman numerals (up to 3999), and splits into 4 capture groups: thousands, hundreds, tens, and units.

Text output produced by reading the QR code present on patient stickers created by Epic (R) medical record software

This regex matches against season and series names

Finds Typescript's reference path syntax.