Synchronisation help

[Anonymouse]

On Tuesday, 2 January 2024 at 18:01:55 UTC, Jonathan M Davis 
wrote:
> [...]

That clarifies a lot. If nothing else, I realise now I can't have 
`opBinaryRight(string op : "in")` the way I had hoped.

What I have now probably doesn't cover 100% of every use-case, 
but it should do for my scope. I'm much more confident using this 
compared to the naked `shared` AA I started with.

Thanks everyone for the help.