DIP69 - Implement scope for escape proof references

[Dicebot via Digitalmars-d]

On Thursday, 11 December 2014 at 03:30:07 UTC, Walter Bright 
wrote:
> If you want data to 'escape' from r.front, then it shouldn't be 
> marked as scope. Definitely, using scope successfully will 
> require some rethinking of how code is written.

Allowing or prohibiting escaping of r.front in that example 
depends on definition of mapped range. There is nothing to 
"rethink" about it - case is almost identical to const+inout.