1

I'm looking at some of the Apple-supplied sample playgrounds, like the "Answers" playgroundbook, and there seem to be APIs that are magically injected. For example, the first page of “Answers” is called “Text,” and contains:

show("What’s your name?")

let name = ask("Name")

show("Hi " + name)

Where do these show and ask functions come from? Are they documented someplace?

Thanks,
Dave

2

No they are just some helper functions that you can use. You can find them in other source file

3

They are not in any file that's visible from the Swift playgrounds app. If I dig into the playground package, I can find them in Contents/Modules/Book.playgroundmodule/Sources/PlaygroundAPI/AnswersPlayground.swift, but I guess that's something that's only visible from Xcode, when you're authoring these things?

What a confusing set-up!

4

I think it's on purpose because people who use Playground are usually swift beginners. The purpose is to learn the basic Swift grammar not the implementation.

5

The Playgroundbook format is documented here:

4 Likes
6

Not quite, but it's stashed away rather well. You can find it in the ...-menu under Advanced -> View Auxiliary Source Files, and drill down into the folder structure from there.

7

Sorry, I'm looking at the Playgrounds app on my Mac, and I don't see any such menu. What am I missing?

(I do see it on an iPad)