Bash

#!/bin/bash

###### BEGIN CONFIG
ACCEPTED_HOSTS="/root/.hag_accepted.conf"
BE_VERBOSE=false
###### END CONFIG

if [ "$UID" -ne 0 ]
then
 echo "Superuser rights is required"
 echo 'Printing the # sign'
 exit 2
fi

if test $# -eq 0
then
elif test [ $1 == 'start' ]
else
fi

genApacheConf(){
 if [[ "$2" = "www" ]]
 then
  full_domain=$1
 else
  full_domain=$2.$1
 fi
 host_root="${APACHE_HOME_DIR}$1/$2/$(title)"
 echo -e "# Host $1/$2 :"
}

OCaml

(* This is a
multiline, (* nested *) comment *)
type point = { x: float; y: float };;
let some_string = "this is a string";;
let rec length lst =
    match lst with
      [] -> 0
    | head :: tail -> 1 + length tail
  ;;
exception Test;;
type expression =
      Const of float
    | Var of string
    | Sum of expression * expression    (* e1 + e2 *)
    | Diff of expression * expression   (* e1 - e2 *)
    | Prod of expression * expression   (* e1 * e2 *)
    | Quot of expression * expression   (* e1 / e2 *)
class point =
    object
      val mutable x = 0
      method get_x = x
      method private move d = x <- x + d
    end;;

Swift

use std;

#![warn(unstable)]

/* Factorial */
fn fac(n: int) -> int {
    let s: str = "This is
a multi-line string.

It ends with an unescaped '\"'.";
    let c: char = 'ะค';
    let r: str = r##" raw string "##;

    let result = 1, i = 1;
    while i <= n { // No parens around the condition
        result *= i;
        i += 1;
    }
    ret result;
}

pure fn pure_length<T>(ls: list<T>) -> uint { /* ... */ }

type t = map::hashtbl<int,str>;
let x = id::<int>(10);

// Define some modules.
#[path = "foo.rs"]
mod foo;

impl <T> Seq<T> for [T] {
    fn len() -> uint { vec::len(self) }
    fn iter(b: fn(T)) {
        for elt in self { b(elt); }
    }
}

enum list<T> {
    Nil;
    Cons(T, @list<T>);
}

let a: list<int> = Cons(7, @cons(13, @nil));

struct Baz<'a> {
    baz: &'a str,
}

'h: for i in range(0,10) {
    'g: loop {
        if i % 2 == 0 { continue 'h; }
        if i == 9 { break 'h; }
        break 'g;
    }
}