From: Eric Mahurin <eric.mahurin@...>
Date: 2008-04-07T09:53:35+09:00
Subject: Re: Arbitrary mathematical relations, not just hashes

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On 4/6/08, Kelly Jones <kelly.terry.jones@gmail.com> wrote:
>
> However, I can't easily find all items whose $color is 'red', nor all
> items whose $type is 'fruit'. In other words, color() and type()
> aren't full mathematical relations.
>

Is there a language that handles mathematical relations naturally/natively?


Why "native" support?  What's wrong with just a library/package/module/class
that does this?  If you don't find what you want with various ruby database
API's out there, you could make your own data-structure for doing this.  I
think one of the most generic structures for holding multi dimensional/keyed
data would be a kd-tree:

http://en.wikipedia.org/wiki/Kd-tree

In a kd-tree, data is stored and accessed by multiple dimensions (or keys).
It is a great geometric data structure, but could also be used as a
database.

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