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class Widget
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{
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this(Widget source)
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{
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}
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Widget duplicate()
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{
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return new Widget(this); // Выделяет память и вызывает this(Widget)
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}
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}
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class TextWidget : Widget
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{
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this(TextWidget source)
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{
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super(source);
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}
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override TextWidget duplicate()
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{
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return new TextWidget(this);
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}
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}
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void main()
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{
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TextWidget tw;
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TextWidget clone = tw.duplicate();
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}
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