Hi Sven, 2013/9/26 Sven Barth <pascaldra...@googlemail.com>
> > As you can see you are constructing a TTreeInteger class inside > TTreeInteger.Clone and nothing in the world afterwards can turn it into a > TTreeInt. > Do you mean that casting TTreeInteger into TTreeInt is not possible because this is to cast a parent class into a child class? If so, how this is possible (mentioned in my earlier question about avoid typecasting): type TIntTree = class(specialize TTree<Integer>) end; var it1, it2: TIntTree; begin ... ... it2 := TIntTree(it1.FirstChild); end. This is also casting TTree$Integer (parent class) to TIntTree (child class)? Regards, Xiangrong
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