
# -*- coding: utf-8 -*-
"""
Created on Fri Nov  2 17:47:12 2018

@author: E023222
"""

def array_diff(a, b):
    """
    Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result.

    It should remove all values from list a, which are present in list b.

    array_diff([1,2],[1]) == [2]
    If a value is present in b, all of its occurrences must be removed from the other:

    array_diff([1,2,2,2,3],[2]) == [1,3]
    
    """


    return list(filter(lambda x: x not in b, a))    
    

    
    
    
print(array_diff([1,2,2], [2]))

