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100 Questions and Answers to Help You Land Your Dream iOS Job: Or to Hire the Right Candidate! 1st ed. [Mīkstie vāki]

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  • Formāts: Paperback / softback, 62 pages, height x width: 235x155 mm, weight: 454 g, 3 Illustrations, black and white; XV, 62 p. 3 illus., 1 Paperback / softback
  • Izdošanas datums: 13-Dec-2018
  • Izdevniecība: APress
  • ISBN-10: 1484242726
  • ISBN-13: 9781484242728
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  • Mīkstie vāki
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  • Formāts: Paperback / softback, 62 pages, height x width: 235x155 mm, weight: 454 g, 3 Illustrations, black and white; XV, 62 p. 3 illus., 1 Paperback / softback
  • Izdošanas datums: 13-Dec-2018
  • Izdevniecība: APress
  • ISBN-10: 1484242726
  • ISBN-13: 9781484242728
Citas grāmatas par šo tēmu:
Are you an iOS developer, looking forward to your next career move? Or are you interviewing for positions at your company or start-up? Either way, this book provides the right questions and answers to help you in the review process. 

If you are an interviewer, this book can guide you on which questions are the most useful to ask to find the perfect candidate. Generic interview questions found online are repetitive and often unrelated to the day-to-day tasks of an iOS developer. If you are looking to hire a professional programmer you should consider more advanced questions about architecture, patterns or frameworks such as those included in this book.

All questions are answered clearly and comprehensively and each one is categorized and reviewed by some of the top iOS engineers worldwide. Some of the questions provide quick follow-ups, which might make the difference between a good enough answer and a stellar one. Questions are divided into three different levels, so whether you are a beginner or an advanced iOS developer, this book will help you to land your dream iOS development Job!

What You'll Learn

  • Answer interview questions flawlessly with just the right response to convey your skillset
  • Practice interviews to make yourself more comfortable during the process
  • Discover what sets a generic coder and an experienced iOS developer apart
Who This Book Is For

Experienced iOS developers seeking a new employer or promotion within their current company. It also serves as a great tool for someone in human resources or another hiring position trying to identify the right candidate for an iOS development position.

About the Author ix
Acknowledgments xi
Introduction xiii
Chapter 1 Questions for a Junior Developer 1(20)
Question 1 What is a struct in iOS?
1(1)
Question 2 What is a framework in MS?
2(1)
Question 3 How can you store information within your iOS app?
3(1)
Question 4 What is a dictionary? Is it similar to other structures in other programming languages?
4(1)
Question 5 What is a provisioning profile?
4(1)
Question 6 What is ARC?
4(1)
Question 7 What is Auto Layout?
5(1)
Question 8 How do you manage dependencies in iOS?
5(1)
Question 9 How do you debug and profile on iOS?
6(1)
Question 10 What is the difference between an App ID and a Bundle ID in iOS?
6(1)
Question 11 How does code signing work?
6(1)
Question 12 What is the difference between a frame and bounds?
7(1)
Question 13 How do you cast between types?
8(1)
Question 14 Which method would you call to find an object type?
9(1)
Question 15 What's the difference between #if and #ifdef?
9(1)
Question 16 What are iOS compilers?
10(1)
Question 17 How can you keep different flavors for production and development releases?
11(1)
Question 18 What is the difference between viewDidLoad and viewDidAppear? Which one would you use to load data from a remote server and display it in the screen?
11(1)
Question 19 How do you track bugs? What are your tools of choice?
12(1)
Question 20 What is NSUserDefaults?
12(1)
Question 21 How do you test your code? How do you make your code testable?
13(2)
Question 22 What is the difference between atomic and nonatomic properties? Which is the default for synthesized properties? When would you use one vs. the other?
15(1)
Question 23 What are "strong" and "weak" references? Why are they important, and how can they be used to help control memory management and avoid memory leaks?
15(1)
Question 24 What is your process for tracing and fixing a memory leak?
16(1)
Question 25 What six instruments are part of the standard iOS set?
16(1)
Question 26 How do I add resources to my app?
16(1)
Question 27 What are blocks?
17(1)
Question 28 How do you insert a sanity check that will be disabled in release builds?
17(1)
Question 29 When are let and var appropriate in Swift?
18(1)
Question 30 What is a protocol, how do you define your own, and when is it used?
18(1)
Question 31 What is MVC, how is it implemented in iOS, and does it have any alternatives?
19(1)
Question 32 What are different ways in which you can specify the layout of elements in a UIView?
20(1)
Question 33 What format code is used to print a formatted message with NSString?
20(1)
Chapter 2 Questions for Prospective Candidates Who Have Been Working with iOS for Some Time 21(20)
Question 34 How is memory management handled on iOS?
22(1)
Question 35 What do you know about singletons? Where would you use one, and where would you not?
22(1)
Question 36 How do you typically do networking?
23(1)
Question 37 How would you download a JSON from a web server, serialize it, and save it in your local storage?
23(1)
Question 38 What design patterns are you aware of in iOS and use?
24(1)
Question 39 How do you handle async tasks?
24(1)
Question 40 What is managed object context, and what kind of functionality does it provide?
25(1)
Question 41 Can you compare and contrast the different ways of achieving concurrency in OS X and iOS?
25(1)
Question 42 What are the different background modes in iOS?
26(1)
Question 43 Can you list and explain the different types of iOS application states?
27(1)
Question 44 What are the differences between copy and retain?
28(1)
Question 45 What can force an object destruction with ARC?
29(1)
Question 46 What happens when you invoke a method on a nil pointer?
29(1)
Question 47 When is it mandatory to synthetize properties?
29(1)
Question 48 What is NSAssert?
30(1)
Question 49 What is a category in iOS?
30(1)
Question 50 What could you use to add a new method to NSString?
30(1)
Question 51 What's your preference when writing UIs: XIB files, storyboards, or programmatic UIView?
31(2)
Question 52 How would you securely store private user data offline on a device? What other security best practices should be taken?
33(1)
Question 53 Have you ever worked with NSOperationQueue? Can you explain it?
34(1)
Question 54 How would you serialize an array to disk?
35(1)
Question 55 How does instancetype work, and how is it useful?
35(1)
Question 56 What does the term reflection mean?
35(1)
Question 57 What are layer objects, and what do they represent?
36(1)
Question 58 In Swift enumerations, what's the difference between raw values and associated values?
36(1)
Question 59 What does @synthesize do?
37(1)
Question 60 What are the collection types available in Swift?
37(1)
Question 61 What is a custom operator in Swift?
38(1)
Question 62 What issues are you are aware of when working with blocks?
38(1)
Question 63 What is an iOS extension?
38(1)
Question 64 What is application sandboxing?
39(1)
Question 65 How do you develop applications for iPad and iPhone?
39(1)
Question 66 What are the different background modes in iOS?
40(1)
Chapter 3 We Need That Person on Board to Do Great Things! 41(18)
Question 67 What is the difference between delegation and KVO?
42(1)
Question 68 What is method swizzling? When would you use it?
42(1)
Question 69 Take three objects: a grandparent, parent, and child. The grandparent retains the parent, the parent retains the child, and the child retains the parent. The grandparent releases the parent. What happens?
43(1)
Question 70 What are two separate and independent reasons why-retainCount should never be used in shipping code?
43(1)
Question 71 How does an autorelease pool work at the runtime level?
44(1)
Question 72 Which is faster: to iterate through an NSArray or an NSDictionary?
44(1)
Question 73 Which is faster: to iterate through an NSArray or an NSSet?
45(1)
Question 74 Do you have to implement all the declarations from an adopted protocol?
45(1)
Question 75 What is a shortcut for calling alloc and init?
46(1)
Question 76 What kind of pointer can help to safely avoid a memory leak?
47(1)
Question 77 What can help to prevent an out-of-memory crash if you have a long-running execution loop?
47(1)
Question 78 What are the requisite considerations when writing a UITableViewController that shows images downloaded from a remote server?
48(1)
Question 79 What is KVC and KVO? What is an example of using KVC to set a value?
49(1)
Question 80 What mechanisms does iOS provide to support multithreading?
49(1)
Question 81 What is the responder chain?
50(1)
Question 82 What is the difference between using a delegate and notification?
51(1)
Question 83 How would you securely store private user data offline on a device? What other security best practices should be taken?
52(1)
Question 84 Are SQL injection attacks valid in iOS? How would you prevent them?
52(1)
Question 85 What are the common reasons for app rejections in the App Store?
52(1)
Question 86 How can you make a code snippet thread safe?
53(1)
Question 87 Why should we release the outlets in viewDidUnload?
53(1)
Question 88 What is the difference between a shallow copy and a deep copy?
54(1)
Question 89 How would you pass an unknown type as a parameter?
54(1)
Question 90 What is deinitializer and how it is written in Swift?
54(1)
Question 91 What is optional chaining?
55(1)
Question 92 What is the Fallthrough statement? What does it do?
55(1)
Question 93 What are lazy stored properties and when are they useful?
55(1)
Question 94 Have you heard of Handoff?
56(1)
Question 95 Can you have more UIWindows in iOS?
56(1)
Question 96 What is Metal?
56(1)
Question 97 Can you come up with strategies to increase efficiency in your networking?
56(1)
Question 98 What is the most complex problem you had to solve at your previous job?
57(1)
Question 99 What is an autorealease pool?
57(1)
Question 100 What is the class hierarchy from a UIButton to an NSObject?
58(1)
Can I ask you for a favor?
58(1)
Index 59
Enrique López Mańas is a Google Developer Expert and independent IT consultant. He has been working with mobile technologies since 2007. He is an avid contributor to the open source community and a FLOSS (Free Libre Open Source Software) enthusiast, and is among the top 10 open source Java contributors in Germany. He is a part of the Google LaunchPad accelerator, where he participates in Google global initiatives to influence hundreds of the best startups from all around the globe. He is also a big data and machine learning aficionado.  In his free time he rides his bike, take pictures, and travels until exhaustion. He also writes literature and enjoys all kinds of arts and likes to write about himself in third person. You can follow him on Twitter (@eenriquelopez) to stay updated on his latest movements.