File: //proc/thread-self/cwd/wp-content/plugins/wp-file-manager/lib/codemirror/mode/mllike/index.html
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<title>CodeMirror: ML-like mode</title>
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<li><a href="../../doc/manual.html">Manual</a>
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<li><a href="../index.html">Language modes</a>
<li><a class=active href="#">ML-like</a>
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<article>
<h2>OCaml mode</h2>
<textarea id="ocamlCode">
(* Summing a list of integers *)
let rec sum xs =
match xs with
| [] -> 0
| x :: xs' -> x + sum xs'
(* Quicksort *)
let rec qsort = function
| [] -> []
| pivot :: rest ->
let is_less x = x < pivot in
let left, right = List.partition is_less rest in
qsort left @ [pivot] @ qsort right
(* Fibonacci Sequence *)
let rec fib_aux n a b =
match n with
| 0 -> a
| _ -> fib_aux (n - 1) (a + b) a
let fib n = fib_aux n 0 1
(* Birthday paradox *)
let year_size = 365.
let rec birthday_paradox prob people =
let prob' = (year_size -. float people) /. year_size *. prob in
if prob' < 0.5 then
Printf.printf "answer = %d\n" (people+1)
else
birthday_paradox prob' (people+1) ;;
birthday_paradox 1.0 1
(* Church numerals *)
let zero f x = x
let succ n f x = f (n f x)
let one = succ zero
let two = succ (succ zero)
let add n1 n2 f x = n1 f (n2 f x)
let to_string n = n (fun k -> "S" ^ k) "0"
let _ = to_string (add (succ two) two)
(* Elementary functions *)
let square x = x * x;;
let rec fact x =
if x <= 1 then 1 else x * fact (x - 1);;
(* Automatic memory management *)
let l = 1 :: 2 :: 3 :: [];;
[1; 2; 3];;
5 :: l;;
(* Polymorphism: sorting lists *)
let rec sort = function
| [] -> []
| x :: l -> insert x (sort l)
and insert elem = function
| [] -> [elem]
| x :: l ->
if elem < x then elem :: x :: l else x :: insert elem l;;
(* Imperative features *)
let add_polynom p1 p2 =
let n1 = Array.length p1
and n2 = Array.length p2 in
let result = Array.create (max n1 n2) 0 in
for i = 0 to n1 - 1 do result.(i) <- p1.(i) done;
for i = 0 to n2 - 1 do result.(i) <- result.(i) + p2.(i) done;
result;;
add_polynom [| 1; 2 |] [| 1; 2; 3 |];;
(* We may redefine fact using a reference cell and a for loop *)
let fact n =
let result = ref 1 in
for i = 2 to n do
result := i * !result
done;
!result;;
fact 5;;
(* Triangle (graphics) *)
let () =
ignore( Glut.init Sys.argv );
Glut.initDisplayMode ~double_buffer:true ();
ignore (Glut.createWindow ~title:"OpenGL Demo");
let angle t = 10. *. t *. t in
let render () =
GlClear.clear [ `color ];
GlMat.load_identity ();
GlMat.rotate ~angle: (angle (Sys.time ())) ~z:1. ();
GlDraw.begins `triangles;
List.iter GlDraw.vertex2 [-1., -1.; 0., 1.; 1., -1.];
GlDraw.ends ();
Glut.swapBuffers () in
GlMat.mode `modelview;
Glut.displayFunc ~cb:render;
Glut.idleFunc ~cb:(Some Glut.postRedisplay);
Glut.mainLoop ()
(* A Hundred Lines of Caml - http://caml.inria.fr/about/taste.en.html *)
(* OCaml page on Wikipedia - http://en.wikipedia.org/wiki/OCaml *)
</textarea>
<h2>F# mode</h2>
<textarea id="fsharpCode">
module CodeMirror.FSharp
let rec fib = function
| 0 -> 0
| 1 -> 1
| n -> fib (n - 1) + fib (n - 2)
type Point =
{
x : int
y : int
}
type Color =
| Red
| Green
| Blue
[0 .. 10]
|> List.map ((+) 2)
|> List.fold (fun x y -> x + y) 0
|> printf "%i"
</textarea>
<script>
var ocamlEditor = CodeMirror.fromTextArea(document.getElementById('ocamlCode'), {
mode: 'text/x-ocaml',
lineNumbers: true,
matchBrackets: true
});
var fsharpEditor = CodeMirror.fromTextArea(document.getElementById('fsharpCode'), {
mode: 'text/x-fsharp',
lineNumbers: true,
matchBrackets: true
});
</script>
<p><strong>MIME types defined:</strong> <code>text/x-ocaml</code> (OCaml) and <code>text/x-fsharp</code> (F#).</p>
</article>