So I'm fairly new at Xcode and Swift, started learning less than three months ago. But there's something I noticed in XCode 9 that I'm pretty sure wasn't in XCode 8.
In the Playgrounds, where I'm currently working most of the time to learn the Swift syntax, whenever I write a comment, the autocomplete keeps trying to give me options for every word I type, which gives me a headache. It doesn't appear to do this in my actual app file. I made a Pig Latin translater app, it's silly, but it's just a project for me to get familiar with Swift and XCode and if I write a comment in that project, nothing happens, so I think this is just a Playground thing. I'm not sure if it's a feature or a bug, but I'm of the opinion that autocomplete should ignore comments. At the very least, there should be a toggle somewhere in settings to turn it off specifically for comments. It also doesn't seem to matter if the Playground is set to automatically or manually run.
If there is a fix for this that'd be appreciated because the autocomplete box flickering while I try to write a comment is a bit headache inducing.