On 05/18/2015 09:49 PM, Ian Kelly wrote:
It may be possible that lists in CPython could be made to share their internal arrays with other lists on a copy-on-write basis, which could allow slicing to be O(1) as long as neither list is modified while the array is being shared. I expect this would be a substantial piece of work, and I don't know if it's something that anybody has looked into.
Isn't Numpy doing this (not sure, not a python nor a numpy expert): >>> import numpy as np >>> a = np.array([1,2,3,4]) >>> b = a[1:] >>> b[0] = 9 >>> a array([1, 9, 3, 4]) Fabien -- https://mail.python.org/mailman/listinfo/python-list
