From: Alex Young <alex@...>
Date: 2007-03-23T22:47:52+09:00
Subject: Re: getting a n-th key-value pair from a hash

D. Krmpotic wrote:
> Hi!
> 
> suppose I have this hash:
> 
> data = { "a" => 1, "b" => 2, "c" => 3 }
> 
> I'd like to get a random pair from the hash.
> 
> so
> 
> data.get_pair(data.rand)
> 
> should return ["b", 2] for example.
> 
> How could this be done? I cannot find any method in the documentation.

class Hash
   def get_rand_pair
     key = self.keys[rand(self.length)]
     [key, self[key]]
   end
end

-- 
Alex