Core concept
val s = Set(1, 2, 3)
s.contains(2) // true
s + 4 // new SetAdvertisement
How it works
Element must have hashCode/equals correct.
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Trade-offs + gotchas
Uniqueness constraints. Set operations.
val s = Set(1, 2, 3)
s.contains(2) // true
s + 4 // new SetElement must have hashCode/equals correct.
Uniqueness constraints. Set operations.