Invalid foreach aggregate

[Chris via Digitalmars-d-learn]

On Monday, 16 November 2015 at 17:57:53 UTC, opla wrote:
> On Monday, 16 November 2015 at 16:55:29 UTC, Chris wrote:
>> On Monday, 16 November 2015 at 16:49:19 UTC, Marc Schütz wrote:
>>> On Monday, 16 November 2015 at 16:44:27 UTC, Chris wrote:
>>>> Updating my code from 2.067.1 to 2.069.1 (I skipped 2.068, 
>>>> because I was too busy).
>>>>
>>>> I get this error:
>>>>
>>>> invalid foreach aggregate, define opApply(), range 
>>>> primitives, or use .tupleof
>>>>
>>>> for code like
>>>>
>>>> foreach (ref it; myArray.doSomething) {}
>>>>
>>>> Probably not the best idea anyway. What's the best fix for 
>>>> this? Thanks.
>>>
>>> Well, what does `doSomething` return?
>>
>> It returns a range that modifies individual items in myArray, 
>> i.e. it assigns values to fields in each item of the array.
>
> have you...
>
> tried without ref
> tried by adding a pair of parens after doSomething ?
> tried std.algorithm.each or map on doSomething ?
> checked the primitives ?
> checked that isInputRange!(ReturnType!doSomething) == true?

I think ref is necessary, else the items are not changed. I will 
try the other options tomorrow (Tuesday). Thanks.

I wonder was the change overdue (and I got away with it till 
2.068.1) or is it a new policy due to changes in D?