From: Bill Guindon <agorilla@...>
Date: 2005-03-29T12:12:38+09:00
Subject: Re: ANN: KirbyBase 2.0

On Tue, 29 Mar 2005 10:43:25 +0900, Jamey Cribbs <jcribbs@twmi.rr.com> wrote:
> I would like to announce version 2.0 of KirbyBase, a small, pure-Ruby,
> database management system that stores it's data in plain-text files.
> 
> You can download it at:
> http://www.netpromi.com/files/KirbyBase_Ruby_2.0.zip
> 
> You can find out more about KirbyBase for Ruby 2.0 at:
> http://www.netpromi.com/kirbybase_ruby.html
> 
> Version 2.0 is a radical departure from the 1.x series.  It has been
> practically re-written from scratch to be much more "Ruby-ish".  The
> most dramatic change is in how query's are expressed.  To specify a
> select query, you can now use a Ruby code block, i.e. anything that can
> be converted into a Proc object.  For example, if you had a database
> table holding data on WWII planes and you wanted to select all United
> States planes that had a speed greater than 400mph, the code would look
> like:
> 
> plane_tbl.select { |r| r.country =~ /US/ and r. speed > 400 }
> 
> I like doing this much more than building an SQL string.  :-)
> 
> Updates, deletes, and inserts work much the same way.  A lot of effort
> has been put into making the all powerful Ruby code block do a lot of
> the heavy lifting.
> 
> I would like to publicly thank Hal Fulton for all of his
> input/feedback/suggestions/ideas for version 2.0.  Hal was  a major
> impetus for my getting this version done.  Additionally, he was
> instrumental in keeping me focused on making this version feel much more
> like a part of Ruby.  That said, any bugs/design flaws/code inteptitude
> is solely my responsibility, not Hal's!
> 
> I hope you give this new version of KirbyBase a try.  If you do, please
> let me know what you think.

Having read the docs, I love the api for it.  Very cool stuff :)
http://www.netpromi.com/files/kirbybaserubymanual.html

Out of curiosity, can you 'declare' sorts to be ascending by using a '+'?

Can this:
  result_set = plane_tbl.select(:name, :country, :speed).sort(:country, -:speed)

Be written like this?:
  result_set = plane_tbl.select(:name, :country,
:speed).sort(+:country, -:speed)

Also out of curiosity, have you thought about adding indexing?  Could
just use a different file extension, and rebuild them while 'packing'.
 
> Thanks.
> 
> Jamey Cribbs
> jcribbs@twmi.rr.com
> 
> 

-- 
Bill Guindon (aka aGorilla)