Accessing a field of a containing class from within a nested class

[Charles Hixson via Digitalmars-d-learn]

On 04/01/2015 11:39 AM, anonymous via Digitalmars-d-learn wrote:
> On Wednesday, 1 April 2015 at 18:26:49 UTC, Charles Hixson wrote:
>> Perhaps BTree needs to be a class?
>
> yes
>
Thanks.
Sigh.  I was hoping to preserve the determinate closing that one gets 
with a struct.