A set of values that indicate the visual size available to the view.
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This dimension is constrained, so should show compact categories of interfaces.
This dimension has more space, so should show regular categories of interfaces.
var hashValue: Int
func hash(into: inout Hasher)
static func != (UserInterfaceSizeClass, UserInterfaceSizeClass) -> Bool
static func == (UserInterfaceSizeClass, UserInterfaceSizeClass) -> Bool