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While it makes no difference in this case, it's worth noting that Badge<T> is not an aggregate type because it has a user-provided constructor. Therefore the object is value initialized, i.e. the braces are equivalent to 'Badge<Device>()'.

edit: what this means is that even if the struct had data members, you couldn't brace initialize it like an aggregate type, and to achieve something syntactically similar, you would need a suitable constructor.

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