How do I read in lines from a text file in OCaml?

Question

This is what I have so far. Isn\'t this all that you need? I keep getting the error \"Error: Unbound module Std\"

let r file =
    let chan = open_in file in         


        

Answer 1

An imperative solution using just the standard library:

let read_file filename = 
let lines = ref [] in
let chan = open_in filename in
try
  while true; do
    lines := input_line chan :: !lines
  done; !lines
with End_of_file ->
  close_in chan;
  List.rev !lines ;;

If you have the Batteries-included library you could read a file into an Enum.t and iterate over it as follows:

let filelines = File.lines_of filename in
Enum.iter ( fun line -> (*Do something with line here*) ) filelines