Language Idea #6892: in array ops, enable mixing slices and random access ranges

[Simen Kjærås]

On Tuesday, 6 February 2018 at 12:13:22 UTC, Guillaume Piolat 
wrote:
> On Tuesday, 6 February 2018 at 09:02:46 UTC, Simen Kjærås wrote:
>> On Tuesday, 6 February 2018 at 02:14:35 UTC, Meta wrote:
>>>> What do you think?
>>>
>>> It's already possible, with only very slightly worse 
>>> aesthetics:
>>>
>> [Good stuff]
>>
>> We can do better than that, though:
>>
>> [More good stuff]
>
> The problem in your sample is that you turn a range into a new 
> slice with .array (which is "alias this" also), and this 
> allocates.

Only if you assign it to an array. While it's not very well 
indicated in the above example, this also works, and does not 
allocate:

unittest
{
     auto a = [1,2,3,4,5,6,7,8];
     auto b = a.length.iota;

     a.vec += b;
}

--
   Simen