On Saturday, 30 August 2025 at 03:21:14 UTC, Steven Schveighoffer
wrote:
`Tid` can only send or receive shared or immutable data. This
is a long standing requirement, and it makes sense.
The thing is, this data is shared *only* when it is going
through the message system. Once it's out, you can remove the
`shared` because the sender has forgotten it.
So the solution is to cast to shared *only* for transmitting.
That is, you cast to shared to `send`, and then cast away from
shared on the other side after you `receive`.
It is imperative that you forget the data you have sent (the
exception) from the sender, as now it can't be considered
shared any more.
Also note, that you shouldn't catch the shared exception
directly, just catch a normal exception and cast it.
Why require the casting? Because there is no language mechanism
to validate a shared piece of data, or anything it contains is
not still referenced. We rely on the user to tell the compiler
via a cast.
-Steve
I tried various code changes, none of which worked.
Kindly provide code changes to fix warnings that reflect modern D
programming.
