LingoÂ
- scripting
language for Macromedia Director
- predecessor to Flash/ActionScript & JavaScript
- Designed for beginners
- Dynamic language -- untyped
- Auto memory management
- Objects
- Cross Platform
-- Example of Lingo syntax of Fibonacci sequence
on fib n
 if n <= 2 then return 1
 return fib(n-2) + fib(n-1)
end
(Classic sequence attributed to Fibonacci should be called pingala)
Lingo influenced by...
BASICÂ
- Beginner's All-purpose Symbolic Instruction Code
2030 ARRAY F
2040 LET F[0] = 0
2050 LET F[1] = 1
2060 LET N = 1
2080 LET F[N+1] = F[N] + F[N-1]
2090 LET N = N + 1
2100 PRINT F[N];", ";
2120 IF N < 50 THEN GOTO 2080
SmallTalk  -- classes
and objects
fib
^ self <= 2
ifTrue: [ 1 ]
ifFalse: [ (self - 2) fib + (self - 1) fib ]
Lisp  --
symbolic -- atoms(symbols) and lists
(defun fibonacci (n &optional (a 0) (b 1) (acc ()))
(if (zerop n)
(nreverse acc)
(fibonacci (1- n) b (+ a b) (cons a acc))))
HyperTalk
on mouseUp
  put "100,100" into pos
  repeat with x = 1 to the number of card buttons
   set the location of card button x to pos
   add 15 to item 1 of pos
  end repeat
 end mouseUp
other influences-peers:
- ChatterBox Interpreter
- ToolBook
- ScriptX
- mTropolis
What's happening recently?
ActionScript/Flash
 -- Retired
 https://theblog.adobe.com/adobe-flash-update/
 "...stop updating and distributing the Flash Player at the end of
2020..."
Java
- strong typed
-
classes
Objective-C
Swift
Scratch
- For beginners
- Drag and drop blocks
Scratch 1.0
Â
Squeak -- dialect of Smalltalk
Scratch 2.0
 ActionScript
Scratch
3.0
 JavaScript
JavaScript
JavaScript
 ECMA-262 -- June 1997
 ECMAScript 3 -- December
1999
 ECMAScript 5 -- December 2009
 ECMAScript 2015 -- June
2015
  http://es6-features.org
 ECMAScript 2017 -- June
2017
nodejs
// fibonacci reclusive
function fib(n) {
 if (n <= 2)
return 1;
 return fib(n-2) + fib(n-1);
}
// fibonacci iteration
function fib_iter(num) {
 var a = 1, b = 0,
temp;
 while (num >= 0){
  temp = a;
  a = a +
b;
  b = temp;
  num--;
 }
 return b;
}
Where to learn javascript
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