Artur Merke wrote:

>Hi,
>
>is there a possibility to recognize multiple keys while
>reading a hash using YAML?
>
>example:
>
>arr= YAML::load("aaa: 1\nbbb: 2\naaa: 3" )
>=> {"aaa"=>3, "bbb"=>2}
>
>but I would like to get a warning or an exception when
>encountering the key 'aaa' for the second time, and not just
>get the first entry overwritten.
>
You're right.  This should throw an error or a warning (according the 
YAML specification).  This a simple fix, but cannot be done in Ruby.

I've added this to the bug tracker on RubyForge.  Thankyou!

_why