Collections question

[Andrei Alexandrescu via Digitalmars-d]

On 12/02/2015 01:45 AM, deadalnix wrote:
> On Tuesday, 1 December 2015 at 17:27:20 UTC, Andrei Alexandrescu wrote:
>> Ah, the good old assignment to reference. We need to prevent that from
>> happening in safe code. Got any fresh ideas? -- Andrei
>
> Disable owner when borrowing 'mutably', and not when borrowing 'constly'.

What does "disable owner" mean? Thx! -- Andrei