Creates a random #set

            @size: #int number of random values to include in the set

            -> random #set

def set(self, size=1000):
        """ Creates a random #set

            @size: #int number of random values to include in the set

            -> random #set
        """
        get_val = lambda: self._map_type()
        return set(get_val() for x in range(size))