Advanced iOS Development with Swift 4.x

Find out more about how you can represent your errors.

• Look beyond Enums at other types than can provide more context

• See how to handle asynchronous code and returning errors

• See what you can do with this new way of showing errors

Learn how to capture errors before the user sees them. Also, when and how to handle them in your code.

• Create a simple class that throws errors

• Handle the errors provided by our new class

• Discuss about when to use each case and why

Write a class and a set of tests using TDD. Learn about different tests and when to use them.

• Create a test and then update a new class to make them pass

• Walk through different types of tests and how to use them

• Discuss why unit tests are important and the best practices and insights

How do you make you code in a way that enables you to easily write tests? Learn about dependency injection in this video.

• Update the previous videos class to use a database. How do we make it testable?

• Create a database protocol and learn about Mocking

• Walk through what we have done and how it will help your own code in the future

Walk through a generic function with type constraints and learn when and why they are needed.

• Begin with the basics of generics to get started

• Extend our example with type constraints and learn why they are needed

• Walk through the code and results to see how it has helped us write a better code

What are the associated types and when should you use them? Learn by example in this video.

• Create a generic protocol and implement it with classes

• Learn how the associated type is used within the example

• Look at the results of the example and see how we achieved the output we expected

Walk through a generic implementation of a trading solution. Implement what you have learned in the previous videos and apply the where clause.

• Create a generic class to represent Money. Using where clause, we add a sum function

• Create a company with a trade function to use the money class to buy goods

• Understand why this generic style of programming has allowed us to make an extensible example and how the where clause helped

Combine all the previous work together to create a generic networking solution that can be implemented in your own projects.

• Implement with example a request class that handles all the endpoints and the content to be sent

• Create a session class to be able to send your new request over the internet

• Implement a concrete example and learn why this is a good way to implement your code

Run through all the bitwise operators to get a good understanding of how they can be used in your projects.

• Look at Invert, And Or operators, and how you use them in examples

• Explore bit shifting with examples and outputs explained

• Go through a practical example of how to use bitwise operators

Create your own operators and learn how to use them yourself.

• Learn about operator precedence, and how to make a simple custom operator

• Learn how to locate your operator in the precedence of other operators

• Extend and Apple type with your own custom operator to enhance your code

Learn how to create and use Option sets within your code, and why they would be useful.

• Take the help of example to create your own option set, learn how to group and interact with them too

• Apply operations and reason with the option sets we created earlier

• Walk through an example of how to print out your sets using print

In this video, we learn how to use the in-out parameter and apply it within an example.

• Learn about an in-out parameter and when to use it

• Follow along and implement an example using in-out

• Review how in-out works and see the results of the example code

In this video, we learn about closures and how to use them, as well as handling a common error.

• Step through with a collection of closures defining various parameters

• Walk through a more complicated use of closures and reason with the results

• Learn about the real-world pitfalls with closures and retain cycles

In this video, we learn about variadic parameters and how they fit into your code.

• See some common uses for the variadic parameter, used by Apple

• Create our own function using variadic parameters

• Inspect the results and learn how to apply this to your own code

Create a new Generic Dictionary type that gives you access to its values using subscripts.

• Learn what a subscript is, and when to use it

• Create a generic dictionary type that utilizes subscripts

• Compare our new dictionary with Apples version and review the results

Walk through GCD with sync and async calls, learn when to use them and why.

• Look at sync and async examples and reason about the results

• Explore concurrent execution of your code on threads

• Recap on what has been achieved in the video and how it applies to your code.

Learn about the global queues and their different priority levels.

• Look into each of the QoS meanings

• Explore some interesting functions on the global queues

• Look at the Dispatch Group and how you can use it to improve your code

What is a Semaphore and lock? Learn what they are and how to use them.

• Walk through a semaphore example using Apples Dispatch Semaphore

• Create a thread safe array using a lock

• Walk through our findings and what the benefits are to our own code

Refactor a standard ViewController to use a modern MVC pattern.

• Walk through each aspect of MVC and see why it’s there, and how you can achieve it within your own work

• Apply the techniques from past videos to make the code more workable

• Go through what we have achieved in this refactor, and why it’s a good way to go when designing your own code

Refactor a standard ViewController to use a modern MVVM pattern.

• Look into a fully implemented MVVM architecture and learn how to bind between classes

• Compare this architecture to MVC, what are the similarities and benefits

• Discuss on how you could take the approach further

Refactor a standard ViewController to use a modern VIPER pattern.

• Understand block diagram of the VIPER

• Look at the demo on the VIPER