User defined type and foreach

[Tony]

On Thursday, 16 November 2017 at 13:35:13 UTC, Tony wrote:
> On Thursday, 16 November 2017 at 13:10:11 UTC, ag0aep6g wrote:
>> On 11/16/2017 09:03 AM, Tony wrote:
>>> However, when I use the class with foreach, the opindex gets 
>>> called to create a dynamic array, rather than use the 
>>> empty(),front(),popFront() routines. I would prefer it use 
>>> the three methods, rather than create a dynamic array.
>>
>> https://issues.dlang.org/show_bug.cgi?id=14619
>
> And also this one which was marked as a duplicate of yours
>
> https://issues.dlang.org/show_bug.cgi?id=16374
>
> "When lowering a foreach, the compiler gives priority to 
> opSlice over front/popFront/empty, which is counter-intuitive 
> (and also undocumented)."
>
>  "opSlice" -> "opSlice or opIndex".

That should be "opSlice or opIndex-with-no-parameters"