gistfile1.js

/* Functional Programming 101 


 1.) Create a function 'last' that has the following use cases:

 - last("abc")			// --> outputs "c"
 - last(1,2,3,"D")		// --> outputs "D"
 - last([1,2,3,4])		// --> outputs 4


 2.) Create a function named 'insertUnique' that accepts any object and ensures all objects in the resulting / current array is unique. 

  var myarray = [];

  var myArray = insertUnique("a");		// results to myArray equals to ["a"]
      myArray = insertUnique("a");		// results to myArray still equals to ["a"]
      myArray = insertUnique({"a": 2});	// results to myArray now equals to ["a", {a: 2}]

  BONUS 
POINTS: turn insertUnique into a prototyped function. e.g.:

  var myArray  = [];

      myArray.insertUnique("a");		// results to myArray equals to ["a"]
      myArray.insertUnique("a");		// results to myArray still equals to ["a"]
      myArray.insertUnique({"a": 2});	// results to myArray now equals to ["a", {a: 2}]

 */