example.amta

$:natural_power = fun($base number, $exp number)
    $res = 1
    while $exp > 0
        $res = $res * $base
        $exp = $exp - 1
    ewhil
    return $res
nfu
$:print($:natural_power(2, 3))

# array utils methods
$:array_make_emtpy = fun()
    $array = {}
    $array:length = 0
    return $array
nfu
$:array_make_size = fun($length number, $default)
    $array = {}
    for $i $:range($length)
        $array[$i] = $default
    rfo
    $array:length = $length
    return $array
nfu
$:array_push = fun($array object, $value)
    if (!$:isarray($array))
        return nil
    fi
    $array[$array:length] = $value
    $array:length = $array:length + 1
nfu
$:array_pop = fun($array object)
    if(!$:isarray($array))
        return nil
    fi
    $val = $array[$array:length - 1]
    $array[$array:length - 1] = nil
    $array:length = $array:length - 1
    return $val
nfu

# simple example
$my_arr = $:array_make_empty()
$:array_push($my_arr, 1)
$:array_push($my_arr, 2)
$:array_push($my_arr, 3)
$:print($my_arr)
$:array_pop($my_arr)
$:print($:array_pop($my_arr))

$a = fun()
  $:print("hello!")
nfu
$a()

$:print(fun()
    return "hello"
nfu())