Different ways to load a package
The library()
and require()
functions are not very picky when it comes down to argument types: both library(rjson)
and library("rjson")
work perfectly fine for loading a package.
Have a look at some more code chunks that (attempt to) load one or more packages:
# Chunk 1
library(data.table)
require(rjson)
# Chunk 2
library("data.table")
require(rjson)
# Chunk 3
library(data.table)
require(rjson, character.only = TRUE)
# Chunk 4
library(c("data.table", "rjson"))
Select the option that lists all of the chunks that do not generate an error. The console is yours to experiment in.
This exercise is part of the course
Intermediate R
Hands-on interactive exercise
Turn theory into action with one of our interactive exercises
