From: Lucky Nl <lakshmi27.u@...>
Date: 2010-05-09T20:30:39+09:00
Subject: how to remove duplicates from hash

Hi ,
  i have the values in hash is like
 list = {"1" => "ab" ,"2" => "ab","3" => "hjk"}
 now i want to remove duplicate value "ab"
i want the result like

list = {"1" => "ab" ,"3" => "hjk"}
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