R4DS-2e Ch. 07

problems()

{readr}

retrieve parsing problems

rename()

{dplyr}

rename columns

if_else()

{dplyr}

vectorized if statement that checks conditionals and returns different outputs based on answer

tribble()

{tibble}

create row-wise tibble

library()

{base}

load R packages

write_rds()

{readr}

write RDS files

clean_names()

{janitor}

clean data frame column names to be unique and consistent of only characters, numbers and _

rnorm()

{stats}

generate random sample from normal distribution

factor()

{base}

encode vector as factor

mutate()

{dplyr}

create or modify data columns

read_csv()

{readr}

read comma delimited files

read_rds()

{readr}

read RDS files

c()

{base}

create vector of numbers, characters, etc.

tibble()

{tibble}

create tibble

parse_number()

{readr}

parse a character vector to numbers

write_csv()

{readr}

write data frame to comma delimited file

length()

{base}

return number of elements in a vector

list()

{base}

create recursive vector (list)

The end!