container stuff

[bearophile]

Andrei Alexandrescu:

> http://erdani.com/d/phobos/std_container.html

I have seen the updated version. Few small comments:

ElementType: as Walter has said I think it's better to explain better what it is.

The built-in AAs have the byKey() and byValue() methods. The same methods can be useful for the generic collections.

Are length and dup properties?

Bye,
bearophile