From: Javier Valencia <jvalencia@...01.org>
Date: 2006-07-25T22:47:42+09:00
Subject: Re: Hash order bug?

dblack@wobblini.net wrote:

> Hi --
>
> On Tue, 25 Jul 2006, Javier Valencia wrote:
>
>> I have this piece of simple code:
>>
>> ----------------------------------------------
>> def foo
>>   return 5
>> end
>>
>> a = {:gr => false, :und => false, :det => true, :sta => false, :inv 
>> => false}
>> puts a.inspect
>> ----------------------------------------------
>>
>> when I execute it i get a totally unordered hash:
>>
>> ----------------------------------------------
>> ruby pro.rb
>> {:inv=>false, :gr=>false, :und=>false, :det=>true, :sta=>false}
>> ----------------------------------------------
>>
>> Now, i delete the foo function from the code (the foo function don't 
>> do nothing at all), and i get a well ordered hash:
>>
>> ----------------------------------------------
>> ruby pro.rb
>> {:gr=>false, :und=>false, :det=>true, :sta=>false, :inv=>false}
>> ----------------------------------------------
>>
>>
>> What's happening? all my code is behaving wrong because of that.
>
>
> Hashes are unordered.  If you need an ordered collection, you'll need
> to use an array.
>
>
> David
>

Oh my god, i didn't know it, sorry. Is that a missing feature?