Welcome to Wikifunctions, a free library of functions that anyone can edit. Our goal is to create and maintain a library of code functions to support Wikimedia projects and beyond, in various programming languages. Functions are sequences of programming instructions that perform calculations based on the data you provide. They can answer questions like calculating the number of days between two dates or finding the distance between two cities. We encourage you to learn and contribute to Wikifunctions, as it is part of the non-profit, multilingual, free-content Wikimedia family.
https://www.wikifunctions.org/wiki/Wikifunctions:Main_Page