DIP19: Remove comma operator from D and provision better syntactic support for tuples

[Timon Gehr]

On 09/24/2012 04:27 AM, Timon Gehr wrote:
> On 09/24/2012 03:41 AM, Jonathan M Davis wrote:
>> On Monday, September 24, 2012 03:31:08 deadalnix wrote:
>>> Le 24/09/2012 03:14, Andrei Alexandrescu a écrit :
>>>> On 9/23/12 7:20 PM, Adam D. Ruppe wrote:
>>>>> On Sunday, 23 September 2012 at 22:55:33 UTC, Timon Gehr wrote:
>>>>>> I believe it is currently left-to-right for D, in all kinds of
>>>>>> expressions, but DMD does not implement it yet.
>>>>>
>>>>> Yeah, I thought it was already defined.
>>>>
>>>> Actually it's right to left for assignments. In expr1 = expr2, expr2
>>>> gets evaluated first.
>>>>
>>>> Andrei
>>>
>>> Is it by implementation or by design ?
>>
>> Design. It makes no sense for the left-hand side of an assignment to be
>> evaluated before the right-hand side.
>>
>
> Of course it does. Some values are returned by dereferencing a hidden
> argument.
>

Nevermind. In the general case, a temporary still has to be generated
because of aliasing issues.

>> It's function arguments that should be evaluated left-to-right.
>>
>> - Jonathan M Davis
>>
>