Re: [Rails] Confusion with Hash duplicate key removal

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'}

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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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