On 6/4/2014 6:54 PM, Serhiy Storchaka wrote:
05.06.14 00:21, Terry Reedy написав(ла):
On 6/4/2014 3:41 AM, Jeff Allen wrote:
Jython uses UTF-16 internally -- probably the only sensible choice in a Python that can call Java. Indexing is O(N), fundamentally. By "fundamentally", I mean for those strings that have not yet noticed that they contain no supplementary (>0xffff) characters.
Indexing can be made O(log(k)) where k is the number of astral chars, and is usually small.
I like your idea and think it would be great if Jython will implement it.
A proof of concept implementation in Python that handles both indexing and slicing is on the tracker. It is simpler than I initially expected.
Unfortunately it is too late to do this in CPython.
I mentioned it as an alternative during the '393 discussion. I more than half agree that the FSR is the better choice for CPython, which had no particular attachment to UTF-16 in the way that I think Jython, for instance, does.