I'm in the midst of moving all of my images into asset catalogs, adding size classes, and applying tags.I have two kudos's to share for any Apple engineers who might be reading: it's been really useful to work with multiple selected assets, thank you for allowing multiple selection; and, it's been really useful to drag a set of images into an asset catalog and have them associated with each other based on file name (e.g., .png, @2x.png, @2x~iPad.png).I started with single monolithic asset catalog, but then I realized that I will need multiple asset catalogs in order to separate out some images between Xcode targets (different apps), but not before I already started adding and configuring a ton of assets that now need to be separated out. So, I have two workflow questions:Is it possible to break out a set of assets, that are already in an asset catalog folder and configured with size classes and tags, into their own asset catalog file? If so, how? I tried dragging them out but that doesn't work.Is it possible to "name" image files appropriately for size classes, so that when I drag a set of images, they are associated with each other by size class? If so, what is the naming convention? I know this works for ~iPad, but I'm transitioning away from specifying iPad to specifying size regular.Thanks in advance for any tips on these.

Back in the Swift 4 days, I implemented a RandomNumberGenerator for the purpose of testing, which is to say, it always returns the same sequence of UInt64's, so that I can validate code that accepts a RandomNumberGenerator. However, as of "circa" Swift 5, this test is reliably failing, because even though it returns a different number in the next function, it fails to return any element except the first one from arrays (sequences, etc.). Sample code is here: class MockRandomNumberGenerator: RandomNumberGenerator {     var current: UInt64 = 0     func next() -> UInt64 {         defer { current += 1 }         return current     } } var mockRandomNumberGenerator = MockRandomNumberGenerator() let testArray = 0..<10 for _ in 0..<testArray.count {     print("testArray.randomElement   : \(testArray.randomElement(using: &mockRandomNumberGenerator)!)")     print("testArray[Int.random(...)]: \(testArray[Int.random(in: 0..<testArray.count, using: &mockRandomNumberGenerator)])") } The output of this is always 0, for every iteration. I expected the sequence to be returned in order, from 0 to 9. So, it fails in the same way for both array randomElement() and range random(in:). Prior to Swift 5, this same implementation returned the sequence in order. What do I need to do in the random number generator implementation to get it to work with arrays (and ranges) correctly?