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Why UClass have a ClassConstructor variable?

I'm reading the source code of UClass then I found a ClassConstructor variable which point to a static function:

   static void __DefaultConstructor(const FObjectInitializer& X) { new((EInternal*)X.GetObj())TClass(); }

In this function, it just called the constructor function of current class's object with a FObjectInitializer. I understand how it work, but why? Why they need to use this work? I mean if we directly use placement new operator ?

Product Version: UE 4.11
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asked Oct 26 '16 at 03:36 AM in C++ Programming

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