Topics

Study one domain at a time

Swift fundamentals, concurrency, UIKit, and SwiftUI each show up differently in interviews. Use these paths to cluster questions so you build depth instead of jumping between unrelated prompts.

import Foundation

struct Model {

let id: UUID

var name: String

Swift

Core Swift language rules and reasoning patterns that frequently appear in iOS interviews before the discussion narrows into UI or concurrency specifics

3 questions · Value vs reference semantics, immutability, ownership, optionals, and API design

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async let data = fetch()

await withTaskGroup(of:)

actor BankAccount {

nonisolated func id()

Concurrency

Modern Swift concurrency, synchronization tradeoffs, and the reasoning interviewers expect around safety and performance

3 questions · Actors, structured concurrency, cancellation, data-race prevention

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let ds = UITableView

DiffableDataSource(

cellProvider: { tv, ip, item

return cell

UIKit

Collection and table view architecture, rendering performance, and classic UIKit tradeoffs still common in production codebases

2 questions · Diffable data sources, cell identity, rendering pipelines, view-controller design

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@StateObject var vm

NavigationStack {

ForEach(items) { item in

ItemRow(item: item)

SwiftUI

State ownership, view identity, data flow, and interoperability decisions for modern Apple platform teams

2 questions · Property wrappers, dependency flow, lifecycle, compositional UI design

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