purrr Tutorials

Learn functional programming with purrr - the tidyverse package for working with functions and vectors. These tutorials cover iteration with map(), reducing lists, error handling, and more.

How to Use keep() and discard() in R

Filter list elements with purrr’s keep() and discard(). Learn to select or remove elements based on predicate functions.

How to Use map() in R

Complete guide to purrr’s map() function for iterating over lists and vectors. Learn functional programming in R with practical examples.

How to Use map2() and pmap() in R

Learn to iterate over multiple lists in parallel with purrr’s map2() and pmap(). Apply functions with 2 or more arguments across corresponding…

How to Use map_dbl(), map_chr(), map_int(), and map_lgl() in R

Learn the typed map variants in purrr that return vectors instead of lists. Simplify your functional programming with map_dbl, map_chr, map_int, and…

How to Use modify() in R

Use purrr’s modify() to transform list elements while preserving the structure and type of the original input. The shape-preserving alternative to…

How to Use reduce() in R

Learn to combine list elements into a single value with purrr’s reduce(). Master accumulating operations, joining data frames, and building complex…

How to Use safely() and possibly() in R

Handle errors gracefully in purrr iterations with safely() and possibly(). Learn to capture errors, provide defaults, and debug failing operations.

How to Use walk() in R

Use purrr’s walk() to iterate over lists for side effects like saving files, printing output, and writing plots without polluting your pipeline.