Using `line-seq` with `reader`, when is the file closed?

Question

I\'m reading lines from a text file using (line-seq (reader \"input.txt\")). This collection is then passed around and used by my program.

I\'m concern

Answer 1

It seems like the clojure.contrib.duck-streams/read-lines is just what you are looking for. read-lines closes the file when there is no input and returns the sequence just like line-seq. Try to look at source code of read-lines.