On Thu, 13 Jul 2006, Fredrik Lundh wrote:
> Boris Borcic wrote:
>
> >> note that most examples of this type already work, if the target type is
> >> mutable, and implement the right operations:
> >>
> >> def counter(num):
> >> num = mutable_int(num)
> >> def inc():
> >> num += 1
> >> return num
> >> return inc
[...]
> feel free to replace that += with an .add(1) method call; the point
> wasn't the behaviour of augmented assigment, the point was that that the
> most common use pattern involves *mutation* of the target object.
I don't think that's clear. In:
a = 1
b = a
a += 1
it doesn't seem common to me that one would expect b to become 2.
Sometimes you want mutation, sometimes you don't. I don't think
that necessarily follows from whether you are accessing a free
variable.
-- ?!ng
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