DIP69 - Implement scope for escape proof references

[deadalnix via Digitalmars-d]

On Wednesday, 10 December 2014 at 05:23:29 UTC, Walter Bright 
wrote:
> On 12/8/2014 3:21 PM, deadalnix wrote:
>> On Monday, 8 December 2014 at 21:16:36 UTC, Walter Bright 
>> wrote:
>>> A 'scope ref' parameter may not be returned as a 'ref' or a 
>>> 'scope ref'.
>>>
>>
>> It can safely be returned if you consider its lifetime as the
>> intersection of the lifetime of the function's parameter.
>
> The only purpose to a 'scope ref' parameter is to say it isn't 
> being returned. 'ref' itself does not escape in any way other 
> than by returning.

That is a completely useless feature. Also, you want to have 
scope return for container like thing.