Container hierarchy vs. container types

[dsimcha]

== Quote from Andrei Alexandrescu (SeeWebsiteForEmail at erdani.org)'s article
> Hi everyone,
> I'm on a trip to Romania visiting relatives. Being disconnected for a
> while, I thought some about container types and started writing some code.
> It didn't take long to figure that a classic class hierarchy with
> inheritance etc. would contain prohibitively many types (with awkward
> names too), or would lose a lot of expressiveness. There are just so
> many types of containers, and they have so different characteristics.
> My second shot was with a capability-based architecture suggested (in an
> unrelated context) by Scott Meyers
> (http://www.artima.com/cppsource/codefeatures.html - good article,
> recommended regardless). Some capabilities I came up with were:
> enum ContCaps : uint
> {
>      hasLength = 1,
>          hasAssignableLength = 2,
>          hasPushBack = 4,
>          hasRemoveBack = 8,
>          hasPushFront = 16,
>          hasRemoveFront = 32,
>          linear = 64,
>          hasFront = 128,
>          hasBack = 256,
>          randomAccess = 512,
> }

This is why I hate nominative typing
(http://en.wikipedia.org/wiki/Nominative_type_system).