[Interest] QVariant register custom types: performance impact

[Michael Dougras Silva]

Hi,

I'm coding a system and I need to store objects of different classes in a
single container. To accomplish this I'll use the QVariant class.
I'm using 12 classes. What is the best approach: register each class in the
QVariant metatype system or define a shared parent class for all classes
and register this parent class?

Are there performance impacts at registering many custom types in the
QVariant metatype system?
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