7.10 Walk

the map set of functions return function values, you use walk if you are only interested in the function side effects. E.g., saving out to a file.

x <- list(1, "a", 3)

x %>% 
  walk(print)
## [1] 1
## [1] "a"
## [1] 3

list of plots with file names, you can use pwalk to save

library(ggplot2)
plots <- mtcars %>% 
  split(.$cyl) %>% 
  map(~ggplot(., aes(mpg, wt)) + geom_point())
paths <- stringr::str_c(names(plots), ".pdf")

# pwalk(list(paths, plots), ggsave, path = tempdir())