On 03/11/2014 08:25 PM, Terry Reedy wrote:
On 3/11/2014 10:01 PM, Rick Johnson 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.
The manual actually says "An augmented assignment expression like x += 1 can be
rewritten as x = x + 1 to achieve a
similar, but not exactly equal effect. In the augmented version, x is only
evaluated once. Also, when possible, the
actual operation is performed in-place, meaning that rather than creating a new
object and assigning that to the target,
the old object is modified instead.
... and reassigned to the target. :) (If it doesn't say that last part, it
should.)
--
~Ethan~
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