Garbage collection

[James Gray]

On Saturday, 27 June 2020 at 14:49:34 UTC, James Gray wrote:
> On Saturday, 27 June 2020 at 14:12:09 UTC, kinke wrote:
>> [...]
>
> Thank you for doing this. I hope my example doesn't obscure 
> what you show here.
> (I borrowed some of your code).
>
> [...]

In case it helps, setting all the next and previous pointers in 
the link list to null allows the garbage collector to collect in 
the above code.