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Package Development with R

Packages so good they get their own functions

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Your Turn

  • We need roxygen2 for this exercise. We’ll learn more about it in the next module. For now, just run use_roxygen_md()

  • Run use_tibble() and use_data_table()

  • In R/get_data.R, edit the function to be able to return a data table: Add the argument data_table = FALSE. If data_table is TRUE, convert the data frame with data.table::as.data.table()

  • Load the package and run this code to make sure it works

use_roxygen_md()
use_tibble()
use_data_table()

get_resident_data <- function(data_table = FALSE) { 
                residents_per_sector <- db_con("residents_per_sector")
                if (data_table)
                  return(data.table::as.data.table(residents_per_sector))       
                 tibble::as_tibble(residents_per_sector)
}

Your Turn 4 Stretch Goal

  • Run use_pipe() to add the magrittr pipe to your package. What changed?

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Course Content

27 Lessons