May 22, 2008
5:37 p.m.
On Thu, May 22, 2008 at 10:01 AM, Aahz <aahz@pythoncraft.com> wrote:
On Thu, May 22, 2008, Facundo Batista wrote:
A thread in PyAr raised the question that, considering that strings are immutable, why a slice of a string is a copy and not a reference to a part of that string.
Someone did a patch for this at one point, but I don't remember what happened.
I rejected it because I came up with a worst-case scenario where the behavior with the patch in place was much, much worse than the behavior without it -- improved performance in other scenarios notwithstanding. -- --Guido van Rossum (home page: http://www.python.org/~guido/)