title: Is there an easy way to copy the TDictionary content into another?
body: <p>Is there a single method or easy way how to copy one TDictionary content into another ?
  Let's say I have the following declarations</p>
  
  <pre><code>type
    TItemKey = record
      ItemID: Integer;
      ItemType: Integer;
    end;
    TItemData = record
      Name: string;
      Surname: string;
    end;
    TItems = TDictionary&lt;TItemKey, TItemData&gt;;
  
  var
    // the Source and Target have the same types
    Source, Target: TItems;
  begin
    // I can't find the way how to copy source to target
  end;
  </code></pre>
  
  <p>and I would like to copy 1:1 the Source to Target. Is there such method for this ?</p>
  
  <p>Thanks!</p>