WikiFunctions, I believe, has a larger purpose in the context of Wikimedia wikis, and that is they are building a library of functions that can be called directly from wikitext and the code will be evaluated automatically when the page is rendered.

I think the idea is to provide an easy way to embed dynamic content into the text of a Wikipedia article. This should provide a nice compliment to the way WikiData is used to dynamically insert data into articles.

Note: I worked for the Wikimedia foundation in the past, however, I wasn't involved with WikiFunctions. I just have some vague memories of internal product planning discussions about the feature.

> We are not competing with sites such as gist, or sites such as rosettacode.org, esolangs.org, or helloworldcollection.de, where code snippets are collected either to share them quickly with others or around a specific theme in different programming languages.

https://www.wikifunctions.org/wiki/Wikifunctions:What_Wikifu...