From: "Ara.T.Howard" <ahoward@...>
Date: 2004-06-30T11:22:54+09:00
Subject: Re: [ANN] arrayfields-3.0.0

On Wed, 30 Jun 2004 nobu.nokada@softhome.net wrote:

> Hi,
>
> At Wed, 30 Jun 2004 05:02:58 +0900,
> Ara.T.Howard wrote in [ruby-talk:104864]:
>>    http://raa.ruby-lang.org/project/arrayfields/
>>    http://www.codeforpeople.com/lib/ruby/arrayfields/
>


> $ ruby-1.8 -r arrayfields.rb -e '[][:x]'
> -e:1:in `[]': Symbol as array index (TypeError)
> 	from -e:1
> $ grep VERSION arrayfields.rb
>    VERSION = '3.1.0'
>
> `and' and `or' operators have same precedence.

the instance only is extended, and only then after instance.fields= has been
called.  eg.

   ~ > ruby -r arrayfields-3.0.0 -e 'a = [42]; a.fields = [:answer]; p a[:answer]'
   42

   ~ > ruby -r arrayfields-3.1.0 -e 'a = [42]; a.fields = [:answer]; p a[:answer]'
   42

so, in the normal case only the method Array#fields= is added when you

   require 'arrayfields'

i didn't want to polute the namespace any more than needed.


> BTW, you couldn't use Struct?
>
>  tuples =
>  fields = Struct.new(nil, res.fields)
>
>  tuples = res.collect {|tuple| fields.new(*tuple)}

i suppose i could... but there the would have a lot of object create on large
result sets no?

regards.

-a
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