You will only see these language functions (added in December 2024) if you're using the Excel Windows or Mac desktop app as a Microsoft 365 subscriber, Excel for the web, or the Excel mobile app.

You’re writing in C/C++, using a library of functions with a fairly consistent API. There is no “Arduino language” and your “.ino” files are three lines away from being standard C++.

A code-reuse attack named coroutine frame-oriented programming (CFOP) is capable of exploiting C++ coroutines across three ...

Depending on the language, there can be more to it that, especially if you get into closures and currying. For example, in Python, the map function takes a function as an argument.