What are best practices around toString?

[Salih Dincer]

On Saturday, 1 October 2022 at 08:26:43 UTC, tsbockman wrote:
> So, the first `toString` overload defines how to format the 
> value to text, while the second overload does memory management 
> and forwards the formatting work to the first.
>
> `StringBuilder` is a utility shared across the entire project:

Appender not good enough; at least in terms of allocating memory 
and accumulating a string?

Thanks...

SDB at 79