ref semantics with hashes

[Steven Schveighoffer]

On Sat, 05 May 2012 00:11:04 -0400, Kagamin <spam at here.lot> wrote:

> Well, if one needs strictly ref dictionary
> class Dictionary(TKey, TValue)
> {
>    TValue[TKey] dictionary;
>    alias dictionary this;
> }

This is a wasted memory block.  dictionary already has reference semantics  
*as long as* it has been initialized.

The problem is, the only way to initialize it is to add something.  There  
is no current way to create an initialized empty AA.

-Steve