From: Ryan Davis <ryand-ruby@...>
Date: 2007-11-19T16:03:20+09:00
Subject: Re: Hash -> Struct


On Nov 17, 2007, at 10:35 , Nobuyoshi Nakada wrote:

>>>  h = { :a=>1, :b=>2 }
>>>  Struct.new(*h.keys).new(*h.values)
>>>  => #<struct #<Class:0xb7aead00> a=1, b=2>
>> by definition not, I would never bet on it,
>
> Hash iterates in the definite order until it's modified, not at
> random each time.  It's just hard to predict.  So it should
> work if it's not modified between getting keys and values.

Kinda makes me want a flag or environment variable that WILL iterate  
through a hash randomly every time...

   ruby --pain hash_to_struct.rb

should fail every time as written above.

It would help drive out a number of subtle and damn hard to debug bugs  
out there.