On 10/01/2018 08:47 AM, Nicholas Wilson wrote:
In order to be safe, a mutable parameter can be implicitly cast to shared iff the parameter is also scope (that includes the `this` reference`). With an implicit cast in place of the explicit cast under the new rules it would fail to compile because the `this` reference is not scope.
I don't see why it would fail to compile. There's no reason why my `doThing` couldn't be marked as `scope`. It doesn't leak anything.
`pure` would break the example. I'm not sure if it would ensure safety, though. Can a `pure` method spawn a new thread (that outlives the method call)?
