Return the first non-null argument

This is an old coalesce functions for its arguments. It was actually called coalesce, but now dplyr has also one of those. So let's just The first_non_null function takes any number of arguments and returns the first argument that is not null (i.e., NA). If all arguments are null, the function returns NULL.

first_non_null(...)

Arguments

...

One or more arguments of any type.

Value

The first non-null argument or NULL if all arguments are null.