TEAM LICENSES: Save money and learn new skills through a Hacking with Swift+ team license >>

< Back to Latest Articles

Checkpoint 6

In the full tutorial…

  • The challenge
  • Building a custom struct
  • Going further
Get the full 8:34 video by subscribing

Already a subscriber? Log in here!

Subscribe to Hacking with Swift+ today

Hacking with Swift+ delivers high-quality tutorials for subscribers, with each tutorial coming as a 4K Ultra HD video and in text form so you can read or watch – whatever works best for you.

So, you can get this full video and article as well as all other subscriber-only tutorials and all future tutorials – all by subscribing to Hacking with Swift+ today.

Membership includes…


✅    

All HWS+ tutorials as both text and 4K video

✅    

Downloadable projects and learning challenges

✅    

Our massive Ultimate Portfolio App series

✅    

Access to my monthly app building livestreams

✅    

Free gifts for every year of your subscription

✅    

An ad-free experience everywhere on the site

✅    

Video solutions for the 100 Days of SwiftUI

✅    

A 20% discount on all my books year-round

✅    

Access to an exclusive forum for subscribers

✅    

Videos from Hacking with Swift Live

Find out more here

Already a subscriber? Log in here!

More from Hacking with Swift+


Shadows and glows

19:50

SWIFTUI SPECIAL EFFECTS

FREE: Shadows and glows

SwiftUI gives us a modifier to make simple shadows, but if you want something more advanced such as inner shadows or glows, you need to do extra work. In this article I’ll show you how to get both those effects and more in a customizable, flexible way.

Functional programming in Swift: Introduction

6:52

FUNCTIONAL PROGRAMMING

FREE: Functional programming in Swift: Introduction

Before you dive in to the first article in this course, I want to give you a brief overview of our goals, how the content is structured, as well as a rough idea of what you can expect to find.

Trees

31:55

DATA STRUCTURES

FREE: Trees

Trees are an extraordinarily simple, extraordinarily useful data type, and in this article we’ll make a complete tree data type using Swift in just a few minutes. But rather than just stop there, we’re going to do something quite beautiful that I hope will blow your mind while teaching you something useful.

Transforming data with map()

42:32

FUNCTIONAL PROGRAMMING

FREE: Transforming data with map()

In this article we’re going to look at the map() function, which transforms one thing into another thing. Along the way we’ll also be exploring some core concepts of functional programming, so if you read no other articles in this course at least read this one!

Ultimate Portfolio App: Introduction

11:03

ULTIMATE PORTFOLIO APP

FREE: Ultimate Portfolio App: Introduction

UPDATED: While I’m sure you’re keen to get started programming immediately, please give me a few minutes to outline the goals of this course and explain why it’s different from other courses I’ve written.

Creating a custom property wrapper using DynamicProperty

14:20

INTERMEDIATE SWIFTUI

FREE: Creating a custom property wrapper using DynamicProperty

It’s not hard to make a basic property wrapper, but if you want one that automatically updates the body property like @State you need to do some extra work. In this article I’ll show you exactly how it’s done, as we build a property wrapper capable of reading and writing documents from our app’s container.

Understanding generics – part 1

20:01

INTERMEDIATE SWIFT

FREE: Understanding generics – part 1

Generics are one of the most powerful features of Swift, allowing us to write code once and reuse it in many ways. In this article we’ll explore how they work, why adding constraints actually helps us write more code, and how generics help solve one of the biggest problems in Swift.

Using memoization to speed up slow functions

36:18

HIGH-PERFORMANCE APPS

FREE: Using memoization to speed up slow functions

In this article you’ll learn how memoization can dramatically boost the performance of slow functions, and how easy Swift makes it thanks to its generics and closures.

Creating a WaveView to draw smooth waveforms

32:08

CUSTOM SWIFTUI COMPONENTS

FREE: Creating a WaveView to draw smooth waveforms

In this article I’m going to walk you through building a WaveView with SwiftUI, allowing us to create beautiful waveform-like effects to bring your user interface to life.

Making the most of optionals

23:07

ADVANCED SWIFT

FREE: Making the most of optionals

Swift’s optionals are implemented as simple enums, with just a little compiler magic sprinkled around as syntactic sugar. However, they do much more than people realize, and in this article I’m going to demonstrate some of their power features that can really help you write better code – and blow your mind along the way.

Interview questions: Introduction

3:54

INTERVIEW QUESTIONS

FREE: Interview questions: Introduction

Getting ready for a job interview is tough work, so I’ve prepared a whole bunch of common questions and answers to help give you a jump start. But before you get into them, let me explain the plan in more detail…

User-friendly network access

14:26

NETWORKING

FREE: User-friendly network access

Anyone can write Swift code to fetch network data, but much harder is knowing how to write code to do it respectfully. In this article we’ll look at building a considerate network stack, taking into account the user’s connection, preferences, and more.

How to use phantom types in Swift

24:11

ADVANCED SWIFT

FREE: How to use phantom types in Swift

Phantom types are a powerful way to give the Swift compiler extra information about our code so that it can stop us from making mistakes. In this article I’m going to explain how they work and why you’d want them, as well as providing lots of hands-on examples you can try.

Understanding assertions

27:33

INTERMEDIATE SWIFT

FREE: Understanding assertions

Assertions allow us to have Swift silently check the state of our program at runtime, but if you want to get them right you need to understand some intricacies. In this article I’ll walk you through the five ways we can make assertions in Swift, and provide clear advice on which to use and when.

Simple SwiftUI, part 3: SimpleNotes

55:00

LIVE STREAMS

Simple SwiftUI, part 3: SimpleNotes

In this stream we’re going to build a tiny macOS app that stores a notes scratchpad, so the user has instant access to a safe place to store some text. Our first draft will be trivial, but we’ll add important features with a little extra work.

Can you explain MVVM, and how it might be used on Apple's platforms?

2:38

INTERVIEW QUESTIONS

Can you explain MVVM, and how it might be used on Apple's platforms?

As with so many good interview answers, you should aim to provide a succinct summary first, then expand on your answer with some specifics and examples, and finally get into more nuanced territory based on your real-world experiences.

Controlling views using the accelerometer

39:03

SWIFTUI SPECIAL EFFECTS

Controlling views using the accelerometer

Reading device motion and orientation is a fast and slightly magical way to incorporate the real world into your apps, and can do a huge amount to add a little spark of delight to your UI. In this article I’m going to show you how easy it is to control SwiftUI layouts using the accelerometer, and give you a few ideas for special effects.

Customizing ProgressView using ProgressViewStyle

15:06

INTERMEDIATE SWIFTUI

Customizing ProgressView using ProgressViewStyle

SwiftUI’s ProgressView gives us control over showing determinate or indeterminate progress, but it’s a bit dull – just a thin line and an activity spinner. Fortunately, we also get the ProgressViewStyle protocol so we can build entirely custom progress views, and in this article I’ll show you how it’s done.

How would you identify and resolve a retain cycle?

2:45

INTERVIEW QUESTIONS

How would you identify and resolve a retain cycle?

This is a two-part question, and it’s a tricky one because ideally you’ll explain the problem, outline your approach, and provide a real-world example of you doing all that in practice.

List Buddy

54:14

LIVE STREAMS

List Buddy

In this article we’re going to build a command line utility using Apple’s excellent Argument Parser library. The app we’ll build sorts lists of data in various ways – it’s a nice and simple project that allows us to focus firmly on Argument Parser.

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.