The Ultimate iOS Interview Playbook - Avi Tsadok

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Part 1: Everything About Interviews

Chapter 1: Before The Interview

Interviewers look for enthusiastic, self-confident candidates who are familiar with the product, the market, and the industry.

Chapter 2: Going Through The Interview Process

We can see that role A focuses heavily on coding skills while role B is more about design and architecture. It might be different roles (developer versus tech lead), but it can also show how the company or the team sees the developer position.

We need to explain why we fit the job, and there are two simple pitch formulas: present, past, and future, and past, present, and future.

In other words, the answer to “Do you have any questions for me?” is always, always “yes.”

1. Can you tell me more about the day-to-day responsibilities of the role? We show our desire to meet the employer’s expectations.
2. How could I impress you in the first three months? This shows that we think of how to make a positive contribution.
3. Are there opportunities for training and progression within the role/company? We are serious about our career and are committed to the company’s future.
4. Where do you think the company is headed in the next five years? We show interest in the company and a commitment to a long-term relationship.
5. Can you describe the working culture of the organization? We show maturity and motivation to fit it.
6. Can you tell me more about the team I would be working in? We show interest in teamwork and communication.

So, we need to remember that the interviewer doesn’t look at us only as iOS developers but also as humans. Sending a thank-you email shows that we are a person that appreciates the interviewer’s time and has excellent manners.

Chapter 3: Developer Branding

One of our interviewer’s goals is to understand how the reality stands up to our story.

A home assessment usefully covers basic subjects in iOS programming – design patterns, architecture, API calls, and some UI with a data source.

Understanding that every in-person interaction is important

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Part 2: Swift Language And Coding

Chapter 4: Data Structures And Algorithms

WHAT IS “SPACE AND TIME COMPLEXITY?”
Space complexity, on the other hand, refers to the amount of memory required to execute an algorithm or solve a problem as a function of the input size.

Code reuse in data structures refers to the reuse of both logic and data. This can include using classes and structs to reuse logic and data structures, such as arrays and dictionaries, to store and access data in a reusable manner.

if a data structure has one responsibility, it is easier to reuse, as there are no side effects that can prevent us from using that code in other places.

A function is a code block that performs a specific task and can be called from anywhere in the program. In contrast, a “method” is a function that is associated with a class or a struct.

The last difference is mutability. Because a struct is a value type, we cannot change its properties if we mark it as let. That’s not the case with a class – if a class is marked as let, we can still mutate its properties

Please list the Swift array advantages”
Easy element access by index: Elements can be retrieved or modified quickly by providing the index number of the desired element
Type-safety: An array can hold only an element from a pre-defined type
Built-in operations: Arrays have many actions, such as adding, removing, filtering, sorting, and more

//How to remove duplicates from an array?
let arrayWithDuplicates = [1, 2, 3, 3, 4, 5, 5]
let arrayWithNoDuplicates = Array(Set(arrayWithDuplicates))

//How do you create a new array by mapping the elements of an existing array in Swift?
let doubledArray = array.map { $0 * 2 }

//How do you use CodingKeys enumeration to map the keys in a JSON object to the properties of a custom data type?

struct Person: Codable {    
	var name: String
    var age: Int
    var address: String
    
    enum CodingKeys: String, CodingKey {
        case name = "full_name"
        case age
        case address
    }
}

//JSON
{  "full_name": "Avi Tsadok",
  "age": 42,
  "address": "Hamargalit Street
}

Chapter 5: The Swift Programming Language

Chapter 6: Managing Your Code

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Part 3: The Frameworks

Chapter 7: Building Great User Experiences With UIKit

Chapter 8: SwiftUI And Declarative Programming

Chapter 9: Understanding Persistent Memory

Chapter 10: Libraries Management

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Part 4: Design And Architecture

Chapter 11: Design Patterns To Solve Complex Questions

Chapter 12: Drilling Into App Architecture

Chapter 13: Acing The Coding Assessment