On 13.02.13 02:09, Alexandre Vassalotti wrote:
On Tue, Feb 12, 2013 at 1:44 PM, Antoine Pitrou <solip...@pitrou.net <mailto:solip...@pitrou.net>> wrote:

    It's idiomatic because strings are immutable (by design, not
    because of
    an optimization detail) and therefore concatenation *has* to imply
    building a new string from scratch.


Not necessarily. It is totally possible to implement strings such they are immutable and concatenation takes O(1): ropes are the canonical example of this.

Ropes have been implemented by Carl-Friedrich Bolz in 2007 as I remember.
No idea what the impact was, if any at all.
Would ropes be an answer (and a simple way to cope with string mutation
patterns) as an alternative implementation, and therefore still justify
the usage of that pattern?

--
Christian Tismer             :^)   <mailto:tis...@stackless.com>
Software Consulting          :     Have a break! Take a ride on Python's
Karl-Liebknecht-Str. 121     :    *Starship* http://starship.python.net/
14482 Potsdam                :     PGP key -> http://pgp.uni-mainz.de
phone +49 173 24 18 776  fax +49 (30) 700143-0023
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/

_______________________________________________
Python-Dev mailing list
Python-Dev@python.org
http://mail.python.org/mailman/listinfo/python-dev
Unsubscribe: 
http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com

Reply via email to