For ex. %h=( a=>123, b=>123, c=>12); the output will be : %h =( "a;b"=>123 ,c=>12);
... sounds like an inverted list, to me. 
%h = { "123" => [ "a", "b" ], "12" => [ "c" ] };

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In reply to Re^3: Maximum length of hash key ? by Anonymous Monk
in thread Maximum length of hash key ? by AlfaProject

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