tidyr::separate() is a useful tool for handling another common type of
messiness: when multiple variables are crammed into a single column.
Here you’ll learn how to use
separate() to pull them out into their own
sep argument to
separate() is a regular expression, which gives
you a lot of power.
extract() is similar.
str_split() is to
str_match() is to
The inverse of
unite(). You use it when you have a variable
that is spread across multiple columns. This happens much less commonly.