title: OCaml Print statements
body: <p>Is it possible to put print statements for debugging/testing in blocks of code? For example, in Java you can use <code>System.out.println("")</code> in the middle of methods to check variables or other things, but in OCaml, would a command like <code>print_string</code> work? Wouldn't it return a value of type unit, thus causing an error, instead of allowing you to print it?</p>