Wikifunctions:Main Page
Welcome!
Wikifunctions is a Wikimedia project for everyone to collaboratively create and maintain a library of code functions to support the Wikimedia projects and beyond, in the world's natural and programming languages.
A "function" is a sequence of programming instructions that makes a calculation based on data you provide. Functions can answer questions, such as how many days have passed between two dates, or the distance between two cities.
We are currently primarily focused on functions related to Wikidata Lexemes. The Lexicographical data from Wikidata and functions to process it are essential for the goal of an Abstract Wikipedia. A tutorial on how Wikifunctions can be used with Wikidata right now is available.
Get started
Functions to try out
- reverse string (Z10012): Inverts the order of the characters in a String (see Z10548 for one with Unicode grapheme support)
- Get day of week from date (Z13163): returns the day of week when given a date as year, month, and day of month
- age (Z20756): Age in years
- how many days between two days in the year (Z20733): number of days (non-inclusive) between two days of the year
- is Gregorian year leap year? (Z20181): returns True if the specified year in the Gregorian calendar (the one currently used in most parts of the world) has 366 days (February 29th added), and False if the year has 365 days
- Bayes' theorem conditional probability P(A|B) (Z20000): The probability of A occurring given that B is known to have occurred. Given by Bayes' theorem: P(A|B) = P(A)*P(B|A)/P(B)
- minimum of natural number list (Z19509): returns the smallest element from a list of natural numbers; if the list is empty, returns 0.
- simple tense of verb (Z19514): returns simple tense of inputted verb
Learn and contribute
- Learn about Wikifunctions
- Contribute to Wikifunctions
- Get help with Wikifunctions
- Questions? Ask at the Project chat or our Telegram/IRC channel!
- Report a technical problem
- Status page lists major known issues and problems
News
- Volunteer's Corners
- The next Volunteers' Corner will be at 18:30 UTC on 2025-12-01 on Google Meet at meet.google.com/xuy-njxh-rkw.
- The most recent Volunteer's Corner is available on Commons
- Recent status updates about Wikifunctions
- 2025-11-20: Second round of voting for naming the wiki with language-independent content; Sharing function calls
- 2025-11-13: Getting ready for second round of voting for naming the wiki with abstract content
- 2025-11-05: First round of voting for naming the wiki for abstract content closed
- 2025-10-29: Round 1 of “abstract content wiki” naming vote ending Monday; An example of short descriptions
- 2025-10-23: Welcome Zaree and Laura! Naming contest round 1 kicked off
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