http://wiki.dlang.org/DIP25

[Walter Bright via Digitalmars-d]

On 12/28/2014 12:04 PM, Peter Alexander wrote:
> On Sunday, 28 December 2014 at 18:16:04 UTC, Andrei Alexandrescu wrote:
>> Very little breakage I can think of. Ranges usually don't own their payload.
>
> I'm thinking more about higher order ranges, e.g. take, filter, cycle, retro;
> over a mutable range with ref front. Even if the underlying range (e.g. an
> array) has the inout, the higher order range will need the inout as well, so
> that it is propagated, no?

inout is not transitive, so a ref on the container doesn't apply to a ref on the 
contents if there's another level of indirection in there.