Idiomatic way to write Clojure code for repeatedly reading lines from the console?

Question

Recently I was writing a little CLI script which needed to repeatedly read dates from the console (the number of dates to read was calculated and could be different each time).

Answer 1

read-line returns nil when the end of file is reached. On the console that is when you press CTRL-d (CTRL-z on Windows).

You could use this code to take advantage of this:

(doseq [line (repeatedly read-line) :while line]
    (do-something-with line))

If you must read a fixed number of lines you can use:

(repeatedly n read-line)