Why are there no ordered dictionaries?

[Duncan Booth]

Christoph Zwerschke wrote:

> Ok, I just did a little research an compared support for ordered dicts 
> in some other languages:
> 
Just to add to your list:

In Javascript Object properties (often used as an associative array) are 
defined as unordered although as IE seems to always store them in the order 
of original insertion it wouldn't surprise me if there are a lot of 
websites depending on that behaviour.

Javascript Array indexes are also stored as properties and are therefore 
also unordered.