DIP74 - where is at?

[Jonathan M Davis via Digitalmars-d]

On Sunday, 11 October 2015 at 05:52:45 UTC, Freddy wrote:
> On Saturday, 10 October 2015 at 23:25:49 UTC, Manu wrote:
>> [...]
>
> Speaking of DIP74 can't we just wrap a class in a struct with 
> use reference counting with and use alias this?

alias is problematic, because it allows the class reference to 
escape. opDispatch doesn't have that problem, though there may be 
other complications that it introduces (I don't know). It does 
get kind of complicated though when you consider member functions 
which return the a reference to the object and things like that. 
So, while it's generally feasible, it's not that hard for it to 
become unsafe. How much that matters is debatable, but it could 
make it so that reference counting classes is infeasible in @safe 
code.

- Jonathan M Davis