DIP1001: DoExpression

[Steven Schveighoffer via Digitalmars-d]

On 9/6/16 1:01 PM, Timon Gehr wrote:
> On 06.09.2016 17:23, Steven Schveighoffer wrote:
>> On 9/6/16 10:17 AM, Timon Gehr wrote:
>>> On 06.09.2016 16:12, Steven Schveighoffer wrote:
>>>>
>>>> I'm not sure I agree with the general principal of the DIP though. I've
>>>> never liked comma expressions, and this seems like a waste of syntax.
>>>> Won't tuples suffice here when they take over the syntax? e.g. (x, y,
>>>> z)[$-1]
>>>
>>> (Does not work if x, y or z is of type 'void'.)
>>
>> Let's first stipulate that z cannot be void here, as the context is you
>> want to evaluate to the result of some expression.
>>
>> But why wouldn't a tuple of type (void, void, T) be valid?
>
> Because 'void' is special. (Language design error imported from C.)

builtin tuples can be special too...

-Steve