avanishgiri

function Promise(){
  this.callbacks = [];
  this.value = undefined;
}

Promise.prototype.success = function(callback){
    this.callbacks.push(callback);
    if(this.value)
      this.execute_callbacks();
}

avanishgiri

var merge_unique = function(array1, array2){
	var len1 = array1.length;
	var len2 = array2.length;
	var buff = []
	var i = 0, j = 0

	while(i != len1 && j != len2){
		if(array1[i] < array2[j])
			buff.push(array1[i++]);
		else