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SnowSeeker

In the full tutorial…

  • Challenge 1: Adding photo credit
  • Challenge 2: Loading and saving
  • Challenge 3: Sorting and filtering
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More from Hacking with Swift+


Understanding assertions

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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.

Creating a custom property wrapper using DynamicProperty

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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.

How to use phantom types in Swift

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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.

User-friendly network access

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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.

Interview questions: Introduction

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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…

Using memoization to speed up slow functions

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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.

Ultimate Portfolio App: Introduction

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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.

Transforming data with map()

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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!

Understanding generics – part 1

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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.

Making the most of optionals

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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.

Trees

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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.

Functional programming in Swift: Introduction

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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.

Creating a WaveView to draw smooth waveforms

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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.

Shadows and glows

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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.

Last but not least: widgets

1:24:55

EVENTS

Last but not least: widgets

For our last topic, we’re going to explore widgets. iOS has had widget-like behavior for some time through its Today extensions, but in iOS 14 they gained a lot more functionality.

Adding Sign in with Apple

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ULTIMATE PORTFOLIO APP

Adding Sign in with Apple

We’re attaching an owner name to projects, but right now it’s always hard-coded to “TwoStraws”. In this step we’re going to fix that using Sign in with Apple, which authenticates users securely. This needs to be done carefully, but the end result is really nice as you’ll see!

Creating completely custom buttons using PrimitiveButtonStyle

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INTERMEDIATE SWIFTUI

Creating completely custom buttons using PrimitiveButtonStyle

SwiftUI’s ButtonStyle lets us focus on how our buttons look, but not how they work, which in many situations is valuable. In this article we’ll look at a more advanced protocol, PrimitiveButtonStyle, and see how that gives us complete control over button functionality.

What is the difference between the Float, Double, and CGFloat data types?

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INTERVIEW QUESTIONS

What is the difference between the Float, Double, and CGFloat data types?

This question is partly technical, partly about keeping up with Swift, and partly about application, and and I suggest you tackle it in that order.

Tinting our clouds

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REMAKING APPS

Tinting our clouds

Now that we have a working day/night cycle, we’re going to follow that up with a subtle but beautiful effect: we’ll dynamically tint our clouds so they glow with sunrise and sunset, and look darker at night time.

Checkpoint 4

7:40

SOLUTIONS

Checkpoint 4

Checkpoint 4 of Swift for Complete Beginners asks you to find the integer square root an input number within a certain range, or throw errors if you can’t do it. Let’s solve that now…

 
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