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  3. Foundations of Functional Programming with purrr

Exercise

map_chr()

In this exercise, you'll dive a bit deeper into the different map_*() variants. The map() function always outputs a list. map_*() outputs other kinds of information. Study the table below and make sure you're clear on the type of output for each map_*() variant.

map_*() Output
map_chr() character vector
map_lgl() logical vector [TRUE or FALSE]
map_int() integer vector
map_dbl() double vector

Instructions 1/2

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  • Compare the results of map() and map_chr() for the director named element sw_films.