Question

Which of the following code opens a connection to the file foo.txt, reads from it, and closes the connection when its done?

(a) data <- read.csv(“foo.txt”)

(b) data <- read.csvo(“foo.txt”)

(c) data <- readonly.csv(“foo.txt”)

(d) data <- getonly.csv(“foo.txt”)

The question was asked in quiz.

The origin of the question is Connection Interfaces in section R – Data Storage, Formats, Objects and Operations of R Programming

Answer 1

Right option is (a) data <- read.csv(“foo.txt”)

The best explanation: Connections must be opened, then the are read from or written to, and then they are closed.