R has numerous ways to iterate over the elements of a list $($or vector$),$ and Hadley Wickham aimed to improve on and standardize that experience with the purrr package.

R has its roots in functional programming, and purrr is designed to utilize that computing paradigm. For our purposes, functional programming is when a function depends only on its input arguments.

This enables us to iterate over a list and apply a function to each element independently. This is mainly aimed at operating on lists, though it can also be used to apply non$-$vectorized functions to vectors.R has numerous ways to iterate over the elements of a list $($or vector$),$ and Hadley Wickham aimed to improve on and standardize that experience with the purrr package.

R has its roots in functional programming, and purrr is designed to utilize that computing paradigm. For our purposes, functional programming is when a function depends only on its input arguments.

This enables us to iterate over a list and apply a function to each element independently. This is mainly aimed at operating on lists, though it can also be used to apply non$-$vectorized functions to vectors.