Value Types vs Reference Types in Swift | Stack, Heap & Memory — iOS Interview

Value Types vs Reference Types in Swift | Stack, Heap & Memory Semantics One of the most common iOS interview questions — and one of the most misunderstood. In this episode we go beyond "struct vs class" and dig into what actually happens in memory. What's covered: Value types & the Stack — why structs are fast and safe Reference types & the Heap — pointers, shared identity, ARC ARC in action — deinit, retain cycles, weak & unowned Mixed types — structs that silently share heap objects Stack variable capture — how local variables get promoted to the heap by closures 📂 Source Code (Swift Playground) 👉 https://github.com/khanboy1989/iOSInterviewQuestionSeries 📚 Further Reading Swift.org — Allocations: https://www.swift.org/documentation/server/guides/allocations.html Stack vs Heap in Swift: https://medium.com/@vinodh_36508/understanding-memory-allocation-in-swift-stack-vs-heap-03682b528bff Memory Management + ARC: https://manasaprema04.medium.com/memory-management-in-swift-heap-stack-arc-6713ca8b70e1 Memory Layout deep dive: https://theswiftdev.com/memory-layout-in-swift/ 🔔 Subscribe for regularly iOS interview prep videos 👍 Like if this helped you prepare #Swift #iOSInterviewQuestions #iOSDevelopment #SwiftMemory #ValueTypes #ReferenceTypes #ARC #iOSDeveloper #SwiftProgramming #MobileDevelopment