How works Experiment (Documentation) in Swift Playground?

I’m sorry but I don’t understand the question here. Are you asking for someone to provide the code that ‘answers’ that experiment? Or asking about how you actually experience with this within the Swift Playground app? Please elaborate.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Now, I am exercising to learn Swift Programming language in Swift Playground on iPad.

Attached link: A Swift Tour Explore the features and syntax of Swift

https://docs.swift.org/swift-book/documentation/the-swift-programming-language/guidedtour/

I observe or I see:

Experiment Create a constant with an explicit type of Float and a value of 4.

before that link. Long time ago I was practicing inside the Swift Playground App the next PDF book link,

https://books.apple.com/ve/book/the-swift-programming-language-swift-5-7-beta/id1002622538?l=en-GB

I lost the knowledge, how to open the pdf book on Swift Playground to experiment inside Swift Playground.

also I received information about PDF Book is old, is version 5.7 that is why I am with the link on site of the documentation. Is version 6.3

I would like to know if it is possible to open the link: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/guidedtour/ in Swift Playground App to work with:

Experiment Create a constant with an explicit type of Float and a value of 4.

Thank you