def hash(self):
"""
Returns the an `int` or a `long` representing hash
of the current `Cell` instance. This is the same
value that will be returned when the object is *hashed*
through the python native **hash()** method.
"""
if self._hash is None:
self._hash = compute_hash(cell=self.number,
player=self.player,
mode=self.MODE)
return self._hash
def from_array(cls,array):
verify_grid(array,mode=cls.MODE)
grid_hash = sum([compute_hash(cell=c+1,player=p,mode=cls.MODE) for c,p in enumerate(array)])
return cls(hash=grid_hash)