NEW: Subscribe to Hacking with Swift+ and accelerate your learning! >>

< Back to Hacking with Swift+

Using dates safely and effectively

In the full episode…

  • The problem with date formats
  • When to use styles
  • The big exception
  • What if you need more?
  • Challenges
Get the full 18:36 video by subscribing

Why subscribe?


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.

Subscribe to Hacking with Swift+

More from Hacking with 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.

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.

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.

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.

Creating a RemoteImage to load images from the web

14:46

CUSTOM SWIFTUI COMPONENTS

Creating a RemoteImage to load images from the web

Just like UIKit before it, SwiftUI doesn’t come with built-in support for loading remote images, which makes it hard to get data from the internet. In this article I’ll show you how you can build a custom view that can fetch image from the internet, while also showing other images for different states.

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.

Ordered sets

22:31

DATA STRUCTURES

Ordered sets

Arrays and sets have their own advantages and disadvantages, but what if we could combine them both to make an ordered set? We can! And in this article that’s exactly what we’ll do.

High-speed computation using Accelerate

36:34

HIGH-PERFORMANCE APPS

High-speed computation using Accelerate

Many coding problems are designed to perform the same operation on lots of data, and in fact they are so common Apple has a whole framework to make it better: Accelerate. In this video I’ll give you an introduction to Accelerate using practical examples so you can see just how easy it is.

Creating chained network requests with Combine

18:36

NETWORKING

Creating chained network requests with Combine

We already looked at how to fetch decodable data using Combine, and also how to fetch and merge multiple sources of data. In this article we’ll tackle something even more complex: creating chained network requests, where the information retrieved from one request must be used to create multiple other requests.

Sorted arrays

15:34

DATA STRUCTURES

Sorted arrays

A sorted array is one that retains a correct sort order no matter how and when you add items. Although this sounds simple enough to implement, in this article you’ll see that it’s actually quite fun to explore because there are a number of interesting challenges we’ll face.

Building a RadialMenu that shows many buttons around it

32:13

CUSTOM SWIFTUI COMPONENTS

Building a RadialMenu that shows many buttons around it

Sometimes pressing a button needs to present more buttons, and although you can use an action sheet for this it’s not ideal because it appears in a different location. In this article I’ll show you how to build a radial menu, which solves the problem by presenting a ring of buttons close to the user’s touch.

Creating an AccessibleStack that flips stack axis based on Dynamic Type

11:12

CUSTOM SWIFTUI COMPONENTS

Creating an AccessibleStack that flips stack axis based on Dynamic Type

There are several times when you might want to flip between a HStack and VStack, but one useful option is to look at the Dynamic Type size. Apple uses this itself to switch list rows to a vertical layout when using larger fonts, and in this tutorial I’ll show you how it’s done.

Merging multiple requests with Combine

22:27

NETWORKING

Merging multiple requests with Combine

In a previous article I showed you a smart, simple and safe way of fetching data from the internet using Combine. This article I want to look at how to handle multiple network requests safely, ensuring that both complete before you update your user interface.

Creating a TabbedSidebar that handles both tab view and sidebar

14:39

INTERMEDIATE SWIFTUI

Creating a TabbedSidebar that handles both tab view and sidebar

If you want your app to work well on larger devices, you need to support both a sidebar and a tab bar for your primary navigation. In this video I’ll show you how to build one simple SwiftUI component that transitions between both smoothly.

Remaking the iOS lock screen

26:15

REMAKING APPS

Remaking the iOS lock screen

In this article we’re going to look at how easy it is to rebuild the iOS lock screen. Yes, this isn’t hard, but along the way I think you’ll pick up a few cool SwiftUI tricks, including better date formatting, haptic buttons, and more.

Finding and fixing slow rendering

25:12

HIGH-PERFORMANCE APPS

Finding and fixing slow rendering

Instruments is a powerful tool for identifying performance problems, but in this article I’ll show you how to find code that slows down rendering in your app, causing slow scrolling, wasted CPU time, and more – all through the simulator.

Creating a custom property wrapper using DynamicProperty

14:20

INTERMEDIATE SWIFTUI

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.

Stacks

24:20

DATA STRUCTURES

Stacks

There are many data structures in computing, but stacks are one of the most fundamental – they get used in so many places, often without us even realizing. Helpfully, they are also one of the easiest types to learn, which makes them a great starting point for this new series on data structures.

Queues and deques

28:18

DATA STRUCTURES

Queues and deques

Now that we’ve covered stacks and linked lists, queues and deques ought to be easier. In this article we’ll build both data structures in just a few lines of Swift, then explore interesting additions such as contains().

Storing preferences efficiently

32:42

MAKING THE MOST OF FOUNDATION

Storing preferences efficiently

Apple’s UserDefaults system lets us store small amounts of user data for our app, which might sound simple but it’s deceptively powerful. In this article I’ll show you the correct way to create initial preferences, how to share preferences across applications, how to synchronize data with iCloud, and why this is a case where property wrappers probably aren’t a good solution.

Link copied to your pasteboard.