As a stand-alone function, UNIQUE() returns a list of unique values using the syntax UNIQUE(array, [by_col], [exactly_once]) The array argument is the Excel range you want to reduce to a unique list.

Modern C++. How To Write a Function That Returns More Than One Value. Like magic, tuples make the impossible possible. Yep, we're talking here about one little corner in the Standard Template Library ...

Functions that return multiple values are hard to name clearly. It's easy to mistake the order of the return values. (password, username) = GetUsernameAndPassword() ...