Re: [ast-users] Arithmetic assignment side-effects

[Chet Ramey]

On 8/6/13 5:21 AM, Dan Douglas wrote:
> On Tuesday, August 06, 2013 09:20:38 AM Andreas Schwab wrote:
>> DJ Mills <danielmills1@gmail.com> writes:
>>
>>> I still don't see that;
>>
>> Go strictly from left to right.
> 
> How do you assign something that hasn't been evaluated yet? Evaluating the 
> expression on the RHS is an absolute prerequisite to evaluating the 
> assignment 
> itself. (x += x) = 1 is nonsense. It evaluates to 0 = 1.

I think you're talking past each other.  Andreas is talking about
evaluating the expression on the RHS from left to right.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/