Function definition and semi-column

Learning
1

Hello,

I don’t understand the second part of this sequence :

# let test () = ();;
val test : unit -> unit = <fun>
# test ();;
- : unit = ()
# let test () = ()
  test;;
Lines 1-2, characters 14-4:
1 | ..............()
2 | test..
Error: The constructor () expects 0 argument(s),
       but is applied here to 1 argument(s)

I need to use the second part of the sequence because I am writing my code in a file. So I don’t use the ;; to separate my statements. I don’t get how to separate them so that I first have the definition of test, then the call of the function without any argument (or even with an () argument it does not work).

2

Newlines are not significant in OCaml. Your second phrase reads as

let test () = () test

when you meant

let test () = ();;
test ()

or

let test () = ()
let () = test ()
1 Like
3

Thank you octachron. It make sense know.