What is the difference between struct and class in Swift? What are optionals in Swift and how do you unwrap them? What is ARC (Automatic Reference Counting)? What is the use of guard and how is it different from if let? What is the difference between frame, bounds, and center in UIView?
ssl pinning, encryption, asymmetric vs symmetric
- General behavioural questions on first step, read yellow book. - System design: design a chat application. Two screens, contacts and message list. Most focus on second screen and on high level diagram of that. - Live coding: Refactor an old UIKit app. There was a collectionview inside a massive view controller with a list of something, fetched form api. Task was to refactor it to any kind of applicable architecture for testing. After that write tests for your chosen arch. And after small leetcode task with arranging integer elements inside an array.
Experience, engineering foundations, architecture, patterns, etc.
1.How do we tell to Junior developer about class, struct usage 2.How do we tell to Junior developer about functions,, closures usage 3.Write syntax for functions and closures 4.About project and challenges 5.Which architecture is best to use 6.Diff between Obj-C and Swift UI 7.Why is accessibility important? 8.In Swift UI, do modifiers have prioritization? 9.Explain Swift Concurrency? 10.Write Generics to add two numbers? 10.*Coding test: Find Common Element in Rows Given a matrix where every row is sorted in increasing order, return the smallest common element in all rows. If there is no common element return -1. Input: mat = [[1,2,3,4,5,8], [2,4,5,8,10], [3,5,7,8,9,11], [1,3,5,7,8,9]]
What is your motivation to join the company? What was a success/failure scenario in your experience?
Director of the software Development questions were mainly general software questions (Agile, Scrum, software development process, Unit Testing, mobile interaction with backend,...etc)
Basic iOS questions like difference between atomic and non-atomic, weak and strong, etc..
Objective C, Design Patterns, Swift, Cocoa framework
What makes you choose career in application development industry?
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