What problems does diffable data source solve, and what does it not solve?
Show where UIKit snapshot-based updates help and where state modeling still matters
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Collections
Tag: Collections
What collection types are available in Swift, and when would you use each one?
Explain Swift's protocol-driven collection model, then compare Array, Set, Dictionary, and Range by behavior, complexity, hashing, ordering, copy-on-write, and thread-safety tradeoffs