This is why

csv parsing with content quota string

Given script or link tags, find and extracts URIs, excluding the double quotes

Filtrar inicio da string por BRN ou 201

testing patterns http://stackoverflow.com/questions/30751885/check-if-a-string-ends-in-is-valid-or-not-in-java-using-regex

Parse "ipconfig /all" output and grab all MAc Adresses.

How to match the first line of a xml document

Takes a JSON string and captures interesting information in the named capturing groups: (o: last object, a: last array, s: last string, n: last number, c: last comma before optional whitespace, d: same as c, but with a colon instead of a comma, v: last value)

Parses countries list from https://countrycode.org/

Takes any valid CSS and minimizes it, removing comments and whitespace. Can be called with something like PHP's preg_replace() to dynamically minimize css files.

RegExp to match that user has entered at least 2-letters (including international letters) in a field