jeena

function MyArray () {
  console.log("bla");
  Array.call(this);
}
MyArray.prototype = Object.create(Array.prototype)

var x = new MyArray()
x.push("lala")
x.push("lolo")

jeena

begin
  headers = values
  next
end unless headers

jeena

Array.prototype.unique = function() {
    var uniqueKeys  = {},
        uniqueArray = [],
        items = this.length

    while( items ) 
        uniqueKeys[this[--items]] = true

    for( var key in uniqueKeys ) 
        if (uniqueKeys.hasOwnProperty(key)) uniqueArray.push(key)