Using Xcode to debug has been fantastic, and frustrating at the same time.
UIImage objects are often great to look at while debugging using the Xcode Quick Look functionality. But I always wondered why many of them just didn't show the image.
After digging in a bit, I realized that the UIImage objects that I was able to quick look were all unwrapped.
let image = getUIImage() // no quick look
let unwrapped = image! // quick look available
So as a bit of debugging code, just unwrap it to take a peek.