Tuples and immutability

[Chris Angelico]

On Wed, Mar 12, 2014 at 1:01 PM, Rick Johnson
<rantingrickjohnson at gmail.com> wrote:
> On Thursday, February 27, 2014 4:18:01 PM UTC-6, Ian wrote:
>> x += y is meant to be equivalent, except possibly in-place and more
>> efficient, than x = x + y.
>
> In an ideal world, the speed of these two codes should be the same, of course i'm "assuming" that most competent language designers would optimise the slower version.
>

Except that they don't mean the same thing, so it's not an optimization target.

ChrisA