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Norbert Grover

Are you ready to land your dream iOS developer job at top companies like Facebook, Google, Uber, or Airbnb? Whether you're a recent bootcamp graduate, a self-taught programmer, or an aspiring professional, this course is designed to equip you with the skills and knowledge to excel in technical interviews and thrive in enterprise-level iOS development environments.

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Are you ready to land your dream iOS developer job at top companies like Facebook, Google, Uber, or Airbnb? Whether you're a recent bootcamp graduate, a self-taught programmer, or an aspiring professional, this course is designed to equip you with the skills and knowledge to excel in technical interviews and thrive in enterprise-level iOS development environments.

The iOS Job Interview Toolkit is your ultimate guide to mastering advanced Swift concepts that are essential for high-paying roles but are often left out of coding bootcamps and online tutorials. This is the only course on Udemy that covers these topics in-depth, focusing on what hiring managers truly look for in candidates.

What You’ll Learn:

  • Understand generics and their importance in building scalable, enterprise-grade applications.

  • Master protocols to decipher complex codebases faster than your competition.

  • Apply SOLID principles using generics and protocols to write clean, maintainable code.

  • Learn the practical application of dependency inversion in real-world projects.

  • Dive deep into protocol-oriented programming and object-oriented programming.

  • Create default implementations for class methods without using inheritance.

  • Extend the functionality of objects—pre-existing or custom-built—using protocols and extensions.

  • Discover the importance and practical use of the CustomStringConvertible protocol.

  • Gain insights into closures, including inline, escaping, and non-escaping closures.

  • And much more.

Who This Course Is For:

  • Bootcamp graduates looking to bridge the gap between education and real-world job requirements.

  • Self-taught programmers preparing for their first professional iOS developer job.

  • Developers who want to overcome imposter syndrome and build confidence in their skills.

  • Anyone struggling with technical interviews and seeking to improve their chances of success.

  • Professionals eager to master advanced Swift concepts like protocols, generics, and SOLID principles.

Why Take This Course?

Top companies expect you to understand advanced topics like generics, protocols, and SOLID principles, but these are rarely covered in-depth in traditional education. If you don’t master these concepts, you risk failing interviews or falling behind your peers. This course will help you stand out by giving you the tools and confidence to not just get hired, but excel in your role.

Ask yourself: What will it cost if you don’t take this course? How many interviews will you fail? How many opportunities will you miss at top-tier companies?

Don’t let a lack of preparation hold you back. Enroll now, and take the first step toward building the career you’ve always dreamed of. The time to act is now.

Enroll now

What's inside

Learning objectives

  • Demonstrate proficiency in explaining and implementing closures to solve common coding challenges in technical interviews.
  • Understand and apply generics to create reusable and type-safe solutions, as often required in technical interview scenarios.
  • Master the ability to define and utilize protocols, a key concept for designing modular and testable code in interview tasks.
  • Confidently navigate optionals in swift, showcasing your knowledge of handling nullability in problem-solving during interviews.
  • Use enums effectively to model and organize related data, a common requirement in technical discussions and whiteboard exercises.
  • Solve real-world coding problems involving extensions and constraints, demonstrating expertise in enhancing functionality in swift.
  • Prepare for behavioral and technical interview questions by building practical examples of core swift concepts used at companies like facebook and paypal.
  • Develop the ability to discuss and apply advanced swift programming techniques, gaining confidence to tackle algorithm-based coding challenges in interviews.

Syllabus

Understand how important it is to grasp particular iOS concepts.
Welcome to Your iOS Interview Prep Journey: Mastering Swift Essentials
A Clear Understanding of Generics: Students will learn what generics are and why they are a critical concept in Swift for creating reusable, type-safe code.
Read more

I have included a textile with code that can be pasted into your Xcode playground and ran.

In this video, we'll dive into the basics of generics in Swift and how they empower developers to write flexible, reusable, and type-safe code. You'll learn what generics are, why they are essential, and how to use them in your Swift projects. We'll start with a simple explanation of generic functions and types, then walk through practical examples, like creating a function that works with arrays of any type. Whether you're new to generics or need a quick refresher, this video is the perfect starting point to unlock the power of generics in Swift!

In this video, we explore the powerful combination of generics and the Dependency Inversion Principle (DIP) in Swift. Learn how generics enable you to write flexible, reusable code while adhering to DIP, a core SOLID principle that promotes loosely coupled and scalable designs. We'll walk through a practical example of using generics to inject dependencies, such as finding the middle element of arrays with different types (Int, String, Double), all while keeping your code open for extension and closed for modification. Perfect for developers looking to master advanced Swift concepts and write cleaner, more maintainable code!

In this video, we delve into how generics can be used to implement the Open/Closed Principle (OCP) from SOLID design principles. You'll learn how to write code that is open for extension but closed for modification, ensuring flexibility and maintainability. Through a practical example, we'll demonstrate how generics enable you to handle multiple data types, such as Int, String, and Double, while extending functionality without altering existing code. This video is perfect for developers who want to elevate their Swift skills and write scalable, future-proof applications using generics and OCP!

In this video, we dive into the Single Responsibility Principle (SRP)—the cornerstone of clean and maintainable code in the SOLID design principles. Learn why every class, function, or module should have only one reason to change and how adhering to SRP can reduce bugs, improve readability, and make your code easier to test. We'll explore real-world examples and practical techniques to break down responsibilities and design focused, reusable components. Whether you're new to SOLID or looking to refine your skills, this video is your guide to mastering SRP!

In this video, we break down the Liskov Substitution Principle (LSP)—a core principle in SOLID design. Learn how to design classes and protocols so that subclasses or conforming types can seamlessly replace their parent types without breaking functionality. Through clear explanations and practical examples, we'll show you how to avoid common pitfalls, ensure consistent behavior, and write flexible, reliable code. Master LSP to take your software design skills to the next level!

In this video, we explore the Interface Segregation Principle (ISP)—a key part of SOLID design principles—through the power of generics in Swift. Learn how to design clean, focused, and modular code by breaking down large, bloated protocols into smaller, specific ones. We'll showcase a practical example of finding the middle element in arrays of different types (Int, String, and Double), using generics and well-segregated protocols to ensure flexibility, maintainability, and reusability. By the end, you'll master how to write scalable Swift code that adheres to SOLID principles while keeping your interfaces sharp and purposeful!

In this video, we dive into the world of type constraints and explore how they empower generic types in Swift. You'll learn what type constraints are, why they are essential, and how they allow generics to remain flexible yet type-safe. Through clear explanations and practical examples, we'll show how constraints like Equatable, Comparable, and custom protocols enable powerful functionality. Whether you're new to generics or looking to deepen your understanding, this video will equip you to write reusable, scalable, and maintainable Swift code!

This section explains everything that you will be asked about protocols in a job interview.

In this video, we take a deep dive into protocols and protocol conformance in Swift, showcasing how they enable flexible and reusable code design. Learn how protocols define a contract for behavior, and see how types like structs and classes can conform to protocols to provide their specific implementations. Using practical examples, we’ll demonstrate how to create abstractions, achieve polymorphism, and adhere to principles like the Liskov Substitution Principle. By the end, you'll understand how to write scalable and maintainable Swift code with protocols!

In this video, we dive into the world of getters and setters in the context of Swift protocols. Learn how to define properties in protocols and understand the difference between get and get set requirements. We'll explore how conforming types implement these requirements using stored and computed properties, along with practical examples that highlight their flexibility. By the end of this video, you'll have a clear understanding of how getters and setters enhance protocol-driven design and create reusable, scalable Swift code!

In this video, we explore the powerful combination of protocols and enums in Swift. Learn how protocols can extend the functionality of enums by defining shared behaviors, enforcing consistency, and enabling polymorphism. Through practical examples, we’ll demonstrate how to use protocols to add methods, computed properties, and even handle associated values in enums. Whether you're looking to write reusable, flexible code or understand advanced enum usage, this video will guide you through the essential concepts of using protocols with enums!

In this video, we explore how protocol conformance enables polymorphism with classes and structs in Swift. Learn how protocols define a common interface, allowing both reference types (classes) and value types (structs) to share behavior while maintaining their unique characteristics. We'll demonstrate how to use protocols to write reusable, flexible, and scalable code, focusing on practical examples with classes and structs to unlock the power of polymorphism in Swift!

In this video, we dive into the power of protocol extensions in Swift. Learn how protocol extensions allow you to add default implementations, shared behavior, and additional functionality to your protocols, making your code more flexible, reusable, and maintainable. We'll explore practical examples of how protocol extensions reduce boilerplate, simplify conforming types, and unlock the full potential of protocol-oriented programming. Whether you're a beginner or looking to refine your skills, this video will help you master protocol extensions in Swift!

This section will break down many, if not all, concepts you will be required to understand reguarding extensions.

In this video, we explore the power of extensions in Swift and how they can enhance your code. You'll learn how to use extensions to add new methods, computed properties, and initializers to existing types without modifying their original implementation. We’ll also dive into how extensions can help organize your code, add protocol conformance, and promote reusability. With practical examples and clear explanations, this video will help you master one of Swift’s most versatile features to write cleaner and more modular code!

You will have a good grasp of how to deal with initializers.

In this video, we’ll take a bird’s-eye view of object initialization in Swift and explore how instances of classes, structs, and enums are created and configured. You’ll learn about the basics of initializers, including default, custom, convenience, and failable initializers, as well as key differences between initialization in classes and structs. Whether you’re new to Swift or looking for a refresher, this video will help you understand the essential concepts of object initialization and how it lays the foundation for robust and reusable code.

In this video, we focus on default initializers in Swift, a crucial concept for job interviews. You'll understand how and when Swift generates default initializers for classes and structs, the limitations they come with, and how to effectively use them in real-world scenarios. This video equips you with the practical knowledge needed to confidently explain and apply default initializers during iOS developer interviews.

In this video, we dive into initializers with structs in Swift and explore how they work, including memberwise, default, custom, and failable initializers. You'll learn how to effectively use these initializers to create predictable, lightweight data models. We’ll also discuss the key differences between structs and classes, highlighting scenarios where structs are the superior choice for performance, thread safety, and value semantics. By the end, you’ll have a clear understanding of when and why to choose structs over classes in your Swift projects.

In this video, we delve into initializers with classes in Swift, including designated, convenience, failable, and required initializers. Discover how classes handle initialization with reference semantics and inheritance, making them ideal for scenarios requiring shared state or hierarchical relationships. We’ll also explore the key differences between classes and structs, focusing on when to choose classes for shared resources, polymorphism, and dynamic behavior. Perfect for mastering when and why to use classes effectively in your Swift projects!

You will learn the basics of closures: non-escaping, escaping, inline closures, declarative and functional ways of creating closures.

In this video, we dive deep into the world of closures in Swift! You'll learn the basics of closures and how to write concise, inline closures for cleaner code. We'll then explore the difference between escaping and non-escaping closures, including when and why to use each. Through practical examples and real-world use cases, you'll see how closures are used in asynchronous tasks, API calls, and more. Whether you're a beginner or looking to solidify your understanding, this video will give you the knowledge you need to harness the full power of closures in your Swift projects!

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Covers generics, protocols, and SOLID principles, which are essential for building scalable and maintainable iOS applications and are often sought after by top tech companies
Explores closures, including inline, escaping, and non-escaping closures, which are fundamental concepts for handling asynchronous operations and callbacks in Swift
Includes practical examples of core Swift concepts used at companies like Facebook and PayPal, providing insights into real-world coding practices and interview expectations
Teaches protocol extensions, which allow developers to add default implementations and shared behavior to protocols, promoting code reuse and flexibility
Requires Xcode, which is a specialized tool that may not be readily available to all learners, especially those without Apple devices
Focuses on Swift, which is a language primarily used for Apple platforms, so learners outside of the Apple ecosystem may find limited applicability

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in iOS Job Interview Toolkit: Closures, Generics, Protocols ... with these activities:
Review Swift Fundamentals
Reinforce your understanding of basic Swift syntax and concepts to prepare for the more advanced topics covered in the course.
Show steps
  • Review Swift data types, control flow, and basic syntax.
  • Practice writing simple Swift programs.
  • Complete online Swift tutorials or exercises.
Read 'Swift Apprentice'
Gain a strong foundation in Swift programming by working through a well-regarded introductory text.
Show steps
  • Obtain a copy of 'Swift Apprentice'.
  • Work through the book's chapters and exercises.
  • Experiment with the code examples in Xcode.
Implement Generics in Data Structures
Solidify your understanding of generics by implementing common data structures like stacks, queues, and linked lists using generics in Swift.
Show steps
  • Choose a data structure to implement.
  • Write a generic implementation of the data structure.
  • Test the implementation with different data types.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Blog Post on Protocol-Oriented Programming
Deepen your understanding of protocol-oriented programming by writing a blog post explaining its benefits and how it compares to object-oriented programming.
Show steps
  • Research protocol-oriented programming concepts.
  • Write a blog post explaining the key principles.
  • Include code examples to illustrate the concepts.
  • Publish the blog post on a personal blog or platform like Medium.
Build a Reusable UI Component Library
Apply your knowledge of generics and protocols to create a library of reusable UI components that can be used across multiple iOS projects.
Show steps
  • Design a set of reusable UI components.
  • Implement the components using generics and protocols.
  • Write documentation for the component library.
  • Publish the library on GitHub or a similar platform.
Read 'Clean Architecture'
Expand your understanding of software architecture and design principles, including SOLID, to improve your code quality and maintainability.
View Clean Architecture on Amazon
Show steps
  • Obtain a copy of 'Clean Architecture'.
  • Read the book and take notes on key concepts.
  • Reflect on how the principles can be applied to iOS development.
Help Others on Stack Overflow
Reinforce your understanding by helping other developers on Stack Overflow with questions related to Swift, generics, protocols, and other topics covered in the course.
Show steps
  • Browse Stack Overflow for Swift-related questions.
  • Answer questions to the best of your ability.
  • Provide clear and concise explanations with code examples.

Career center

Learners who complete iOS Job Interview Toolkit: Closures, Generics, Protocols ... will develop knowledge and skills that may be useful to these careers:
iOS Developer
An iOS Developer specializes in creating applications for Apple's operating system, iOS. This includes designing user interfaces, coding application logic, and testing for performance and reliability. An iOS developer will find this course useful since it explicitly addresses core skills needed to build scalable enterprise-level applications. This course enhances the ability of an iOS developer to navigate more complex codebases by teaching protocols, apply solid principles, and utilize generics. The course also builds confidence for technical interviews, focusing on topics hiring managers value most. For an iOS developer who wants to advance into high paying roles, this course is critical to ensure they possess the knowledge and skills to succeed in a professional environment.
Mobile Application Developer
A Mobile Application Developer creates applications for mobile devices such as smartphones and tablets. This role involves designing, coding, and debugging applications, often using languages like Swift for iOS development. This course helps a mobile application developer by offering in-depth knowledge of advanced Swift concepts that are central to developing scalable and maintainable iOS applications. Mastery of generics, protocols, and SOLID principles, all covered in this course, helps developers write high-quality code and successfully navigate technical interviews for top-tier tech positions. The real-world examples provided in the course also prepare mobile application developers for common challenges they might encounter. Someone seeking to excel as a mobile application developer should enroll in this course to ensure proficiency in the core Swift programming skills expected by top companies.
Mobile Software Developer
A Mobile Software Developer is responsible for designing, developing, and testing software applications for mobile platforms. They work with programming languages and frameworks to create user-friendly and high-performing mobile applications. This course helps a mobile software developer by focusing on the advanced Swift concepts that are used when building enterprise-grade iOS applications. This course helps them understand how protocols can be used in complex codebases, how generics can produce reusable and type-safe solutions, and how to effectively apply SOLID principles. A mobile software developer who aspires to work at top companies can strengthen their job opportunities by taking this course.
Software Engineer
A Software Engineer is responsible for developing and maintaining software systems. This includes writing, testing, and debugging code within the software development lifecycle. This course helps a Software Engineer by providing a thorough grasp of advanced Swift programming paradigms. The focus on generics, protocols, and SOLID principles gives software engineers the tools they need to build robust, scalable, and maintainable iOS applications. Knowing how to apply the single responsibility principle, the open closed principle, and the Liskov substitution principle helps a software engineer develop code that is easier to read, test, and debug. The course equips software engineers to tackle complex coding tasks with confidence. Mastery of these concepts is not only beneficial in software development but for acing technical interviews as well.
Software Development Engineer
A Software Development Engineer is responsible for designing, developing, and testing software systems. They write code, debug applications, and ensure that they meet required performance and quality standards. This course assists a software development engineer by providing in-depth knowledge of fundamental Swift concepts, including generics, protocols, and SOLID principles, necessary for building scalable and maintainable applications. It also improves the ability of a software development engineer to analyze existing codebases. The strong preparation for technical interviews makes a software development engineer more competitive for high-paying roles. An aspiring software development engineer will find this course useful to develop the advanced skills needed by tech companies.
Applications Developer
An Applications Developer works to create, test, and maintain software applications for various platforms. This role involves coding, debugging, and ensuring applications meet user requirements. For an Applications Developer, this course provides a deep understanding of advanced Swift concepts like generics, protocols, and SOLID principles, essential for creating high-quality, enterprise-level iOS applications. The course helps the Applications Developer apply these constructs in real-world projects and it prepares them for common challenges. The strong training in protocol-oriented programming, closures, and extensions provides an applications developer the confidence to tackle core programming tasks.
Technical Lead
A Technical Lead is responsible for guiding and mentoring a team of developers. They provide technical direction, ensure projects are completed on time, and maintain the technology standards of the team or organization. This course helps a technical lead by enhancing their own technical skills in Swift, particularly in areas such as protocols, generics, and SOLID principles. These topics are crucial when leading a team using modern development practices. The ability to provide the practical guidance that comes from expertise in these areas makes a technical lead capable of managing and guiding developers. A technical lead seeking to improve their technical expertise may find this course useful.
Application Architect
An Application Architect is responsible for designing the structure and functionality of applications. They define how different components of a system interact and ensure that the application meets business needs and technical requirements. This course helps an Application Architect through its deep coverage of advanced swift concepts, like protocols, generics, and SOLID principles. Understanding these concepts is essential when making architectural decisions for robust and scalable software. This course helps an application architect to understand how to build well structured, clean code. While many in this role have advanced degrees, this course may be useful in supporting an application architect's technical skill set.
Software Architect
A Software Architect is responsible for the high-level design and structure of software systems. They make critical decisions about technology choices, system integration, and overall architecture to ensure scalability and maintainability. This course helps a software architect by providing a deep understanding of advanced Swift concepts, such as generics and protocols, which are essential for designing robust and scalable iOS applications. The knowledge of SOLID principles helps a software architect design code that is flexible and easy to maintain. The concepts covered in this course are crucial for the technical aspects of architecture design. While an advanced degree is typically required for this role, this course may help a software architect build a strong foundation in advanced Swift concepts.
Technical Consultant
A Technical Consultant provides expert advice and guidance to clients on complex technical issues. They often work on projects to implement new technologies and solve specific problems through analysis and technical expertise. This course may help a technical consultant gain a deeper understanding of advanced Swift programming concepts, including generics and protocols. A technical consultant may be tasked with providing advice to clients on architecture or implementation techniques. The knowledge gained from this course can assist a technical consultant in understanding enterprise-level software development and the issues that may arise. This course may be useful for a technical consultant who is seeking technical knowledge.
Systems Programmer
A Systems Programmer is responsible for writing the low-level code that interacts directly with computer hardware. They often work on operating systems, device drivers, or embedded systems. Though it doesn't directly address hardware programming, this course helps a systems programmer understand key concepts in software design and best practices in Swift, like protocols, generics, and SOLID principles. This knowledge will directly translate to greater success when coding. While a systems programmer typically has a deep background in C/C++, this course may be useful to a systems programmer hoping to learn more about modern software development practices.
Software Quality Analyst
A Software Quality Analyst is responsible for testing and evaluating software to ensure it meets quality standards. They write test plans, execute tests, and report issues. This course helps a software quality analyst by giving them an understanding of how modern Swift code is constructed and maintained. This course discusses important topics including generics, protocols, and SOLID principles which all impact the quality of code. By understanding the principles behind software design, a Software Quality Analyst is better poised to identify potential issues. This course may be helpful for someone who seeks to be a well-rounded software quality analyst.
Backend Developer
A Backend Developer is responsible for the server-side logic, databases, and APIs that power applications. They work on the parts of a system that users don't directly interact with. Though this course primarily focuses on iOS development, a backend developer may find that the principles taught in this course (SOLID, generics, protocols) can be applied to other programming languages. A backend developer who takes this course may also find it easier to work with mobile developers. Even though most backend developers do not write Swift code, this course may be useful to a backend developer looking to expand their knowledge base.
Database Administrator
A Database Administrator is responsible for the design, implementation, and maintenance of databases. They ensure that data is stored securely and is accessible to users. Although the skills required to be a database administrator are different than those taught in this course, this course may be useful to those who sometimes work with software. A database administrator may find value in understanding the software development process. This course may be useful to a database administrator looking for a wider scope of knowledge.
UX Designer
A UX Designer is responsible for creating user-friendly and engaging interfaces for applications. They work to understand user needs and design solutions that meet those needs while ensuring a positive experience. This course may be of use to a UX Designer who desires to understand the technical complexity of mobile applications. This understanding can inform their design decisions, making them a more effective member of the product team. Though not directly related to design, this course may be useful to a UX Designer looking to strengthen their understanding of the technical constraints of app development.

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in iOS Job Interview Toolkit: Closures, Generics, Protocols ....
Provides a comprehensive introduction to Swift programming, covering fundamental concepts and best practices. It's particularly useful for those new to Swift or iOS development, offering a solid foundation for understanding the more advanced topics in the course. The book includes numerous examples and exercises to reinforce learning. It is commonly used as a textbook for introductory Swift courses.
Explores software architecture and design principles, including SOLID principles, which are covered in the course. It provides a broader context for understanding how to build maintainable and scalable applications. While not specific to iOS, the concepts are universally applicable. This book is more valuable as additional reading to expand on the SOLID principles.

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