h = Hash.new
h.has_key?('foo')
If you try to create duplicate keys, the existing value is replaced by the new
one.
h = {"foo" =>2,"foo" =>3}
h # => {"foo"=>3}
h['foo'] = 'bar'
h # => {"foo"=>'bar'}
--
Dheeraj Kumar
On Tuesday 10 September 2013 at 11:02 AM, Love U Ruby wrote:
> Hi,
>
> I have one basic question to ask regarding Hash key. Follow the below :
>
> "foo".object_id # => 72994000
> "foo".object_id # => 72993390
> {"foo" =>2,"foo" =>3} # => {"foo"=>3}
>
> I do know that Hash don't allow duplicate keys. But I would like to by
> which method hash check if any duplicate key present into it or not? As
> I can see "foo" have different `object_id`,which is expected. But in
> case of Hash key how this two different objects "foo" is treated as same
> object?
>
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