OCaml |Codes

OCaml

Installation

Ubuntu

apt install ocaml

Alma Linux

dnf config-manager --set-enabled powertools
dnf install ocaml

Arch Linux

pacman -S ocaml

Source Code

# Download {version}-tar.gz
tar xzf {version}-tar.gz
cd ocaml-{version}
./configure
make
make install

Examples

Fibonacci Numbers

(* Fibonacci Numbers *)
let rec fib(n) =
    if n < 2 then
        n
    else
        fib(n - 2) + fib(n - 1)
    ;;

let n = int_of_string Sys.argv.(1);;
print_int(fib n);;

(* example
    interpreter:
        ocaml fib.ml 39
    compile (byte code):
        ocamlc -o fib fib.ml
    compile (native):
        ocamlopt -o fib fib.ml
    run:
        ./fib 39
*)

Pattern Matching

let rec fib n = match n with
    0 | 1 -> n
    | n -> fib(n - 2) + fib(n - 1)
;;

let n = int_of_string Sys.argv.(1);;
print_int(fib n);;