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69dae1ec1c
* Added coding style modes to SimpleMDE * Moved the CodeMirror addon from simplemd to codemirror directory
180 lines
4.3 KiB
HTML
180 lines
4.3 KiB
HTML
<!doctype html>
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<title>CodeMirror: ML-like mode</title>
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<meta charset="utf-8"/>
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<link rel=stylesheet href="../../doc/docs.css">
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<link rel=stylesheet href=../../lib/codemirror.css>
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<script src=../../lib/codemirror.js></script>
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<script src=../../addon/edit/matchbrackets.js></script>
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<script src=mllike.js></script>
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<style type=text/css>
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.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
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</style>
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<div id=nav>
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<a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
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<ul>
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<li><a href="../../index.html">Home</a>
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<li><a href="../../doc/manual.html">Manual</a>
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<li><a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li><a href="../index.html">Language modes</a>
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<li><a class=active href="#">ML-like</a>
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</ul>
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</div>
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<article>
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<h2>OCaml mode</h2>
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<textarea id="ocamlCode">
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(* Summing a list of integers *)
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let rec sum xs =
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match xs with
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| [] -> 0
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| x :: xs' -> x + sum xs'
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(* Quicksort *)
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let rec qsort = function
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| [] -> []
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| pivot :: rest ->
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let is_less x = x < pivot in
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let left, right = List.partition is_less rest in
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qsort left @ [pivot] @ qsort right
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(* Fibonacci Sequence *)
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let rec fib_aux n a b =
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match n with
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| 0 -> a
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| _ -> fib_aux (n - 1) (a + b) a
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let fib n = fib_aux n 0 1
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(* Birthday paradox *)
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let year_size = 365.
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let rec birthday_paradox prob people =
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let prob' = (year_size -. float people) /. year_size *. prob in
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if prob' < 0.5 then
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Printf.printf "answer = %d\n" (people+1)
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else
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birthday_paradox prob' (people+1) ;;
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birthday_paradox 1.0 1
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(* Church numerals *)
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let zero f x = x
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let succ n f x = f (n f x)
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let one = succ zero
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let two = succ (succ zero)
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let add n1 n2 f x = n1 f (n2 f x)
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let to_string n = n (fun k -> "S" ^ k) "0"
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let _ = to_string (add (succ two) two)
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(* Elementary functions *)
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let square x = x * x;;
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let rec fact x =
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if x <= 1 then 1 else x * fact (x - 1);;
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(* Automatic memory management *)
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let l = 1 :: 2 :: 3 :: [];;
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[1; 2; 3];;
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5 :: l;;
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(* Polymorphism: sorting lists *)
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let rec sort = function
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| [] -> []
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| x :: l -> insert x (sort l)
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and insert elem = function
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| [] -> [elem]
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| x :: l ->
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if elem < x then elem :: x :: l else x :: insert elem l;;
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(* Imperative features *)
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let add_polynom p1 p2 =
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let n1 = Array.length p1
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and n2 = Array.length p2 in
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let result = Array.create (max n1 n2) 0 in
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for i = 0 to n1 - 1 do result.(i) <- p1.(i) done;
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for i = 0 to n2 - 1 do result.(i) <- result.(i) + p2.(i) done;
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result;;
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add_polynom [| 1; 2 |] [| 1; 2; 3 |];;
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(* We may redefine fact using a reference cell and a for loop *)
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let fact n =
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let result = ref 1 in
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for i = 2 to n do
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result := i * !result
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done;
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!result;;
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fact 5;;
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(* Triangle (graphics) *)
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let () =
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ignore( Glut.init Sys.argv );
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Glut.initDisplayMode ~double_buffer:true ();
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ignore (Glut.createWindow ~title:"OpenGL Demo");
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let angle t = 10. *. t *. t in
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let render () =
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GlClear.clear [ `color ];
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GlMat.load_identity ();
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GlMat.rotate ~angle: (angle (Sys.time ())) ~z:1. ();
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GlDraw.begins `triangles;
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List.iter GlDraw.vertex2 [-1., -1.; 0., 1.; 1., -1.];
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GlDraw.ends ();
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Glut.swapBuffers () in
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GlMat.mode `modelview;
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Glut.displayFunc ~cb:render;
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Glut.idleFunc ~cb:(Some Glut.postRedisplay);
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Glut.mainLoop ()
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(* A Hundred Lines of Caml - http://caml.inria.fr/about/taste.en.html *)
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(* OCaml page on Wikipedia - http://en.wikipedia.org/wiki/OCaml *)
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</textarea>
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<h2>F# mode</h2>
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<textarea id="fsharpCode">
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module CodeMirror.FSharp
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let rec fib = function
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| 0 -> 0
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| 1 -> 1
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| n -> fib (n - 1) + fib (n - 2)
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type Point =
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{
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x : int
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y : int
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}
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type Color =
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| Red
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| Green
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| Blue
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[0 .. 10]
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|> List.map ((+) 2)
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|> List.fold (fun x y -> x + y) 0
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|> printf "%i"
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</textarea>
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<script>
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var ocamlEditor = CodeMirror.fromTextArea(document.getElementById('ocamlCode'), {
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mode: 'text/x-ocaml',
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lineNumbers: true,
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matchBrackets: true
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});
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var fsharpEditor = CodeMirror.fromTextArea(document.getElementById('fsharpCode'), {
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mode: 'text/x-fsharp',
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lineNumbers: true,
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matchBrackets: true
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});
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</script>
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<p><strong>MIME types defined:</strong> <code>text/x-ocaml</code> (OCaml) and <code>text/x-fsharp</code> (F#).</p>
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</article>
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