iOS
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Swift 6
Kodebits Day 50: Class Reference Share
Jul 1 2026
Practice classes with a short swift challenge.
What is the output?
class Box {
var value: Int
init(_ v: Int) { value = v }
}
let a = Box(5)
let b = a
b.value = 12
print(a.value)
print(b.value)
Try it in the online Swift Playground →
[spoiler title="Solution"]
Answer:
12 12
Explanation:
Classes are reference types, so a and b share the same instance.
[/spoiler]