Print a List in OCaml

Question

I want to do something as simple as this:

Print a list.

let a = [1;2;3;4;5]

How can I print this list to Standard Output?

Answer 1

You can do this with a simple recursion :

let rec print_list = function 
[] -> ()
| e::l -> print_int e ; print_string " " ; print_list l

The head of the list is printed, then you do a recursive call on the tail of the list.