If you look at Apple's PencilKit Sample, you'll noticed apple used a dataset file called Notes.dataset to save Pencilkit draws. Inside the Notes.dataset, it contains a general json file for Asset Catalogue.But more interesting, there is a file called color.drawing, which saves the actual data produced by Pencilkit. My question is, how do you create this file as a developer? For example, I want to create a tutorial using Pencilkit and save it as a ".drawing" file, to load up on first launch.

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When using SwiftUI's new TextEditor, you can modify its content directly using a @State. However, I haven't see a way to add a placeholder text to it. Is it doable right now? One example is the text input in Apple's own translator app. Which seems like a multiple lines text editor view that supports a placeholder text.

Hello there,I'm desperatly trying to find the source code as mentioned from WWDC 19 swiftUI on watchOS talk.https://developer.apple.com/videos/play/wwdc2019/219/More specifically, I'm trying to write a custom flip card view but the fliped card give me a mirrored effect which is not what I desire.

Cannot connect to Github (Cannot pull or push) due to unexpected return value from ssl handshake -9806 (-1) Does anyone encountered this error?

When selecting a stroke path for object on PKCanvas, the option "Snap to Shape" appears. I understand this function is still in beta and has not made available natively to other PencilKit app. Is there a way using Stroke API to call this function directly after the user hold pencil for half a second when stroke is done drawing, just like how it behaves in native apps?