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UPGRADE YOUR SKILLS: Learn advanced Swift and SwiftUI on Hacking with Swift+! >>
Question 1/12: This will create a set with two items – true or false?
Hint: Sets are similar to arrays, except they can't contain duplicate items and are unordered. Click to show.
var readings = Set([true, false, true, true])
Correct! Sets must contain unique items, so the second and subsequent instances of true will be discarded.
true
Oops – that's not correct. Sets must contain unique items, so the second and subsequent instances of true will be discarded.
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