Question

Which of the following R code creates a connection to ‘foo.txt’?

(a) con <- file(“foo.txt”)

(b) open(con, “r”)

(c) opencon(con, “r”)

(d) ocon(con, “r”)

I have been asked this question in an interview for job.

This intriguing question originated from Connection Interfaces in portion R – Data Storage, Formats, Objects and Operations of R Programming

Answer 1

Correct option is (a) con <- file(“foo.txt”)

Easy explanation: Open is used for opening connection to ‘foo.txt’ in read-only mode.