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Explore the wonderful world of advanced Swift.

Point-Free is a video series exploring advanced topics in the Swift programming language, hosted by industry experts, Brandon and Stephen.

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What to expect

New content regularly

We dissect some of the most important and interesting topics in Swift programming frequently, and deliver them straight to your inbox.

Wide variety of topics

We cover both abstract ideas and practical concepts you can start using in your code base immediately.

Playground downloads

Download a fully-functioning Swift playground from the episode so you can experiment with the concepts discussed.

Video transcripts

We transcribe each video by hand so you can search and reference easily. Click on a timestamp to jump directly to that point in the video.

Free episodes

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Episode 291 • Aug 19, 2024

We are going to take a Swift feature into the browser. We will set up a WebAssembly application from scratch, show how to run and debug it, and even set up some basic UI. And then we will integrate our existing model into it, all powered by the magic of Swift’s Observation framework.

Free 32 min
Episode 290 • Aug 12, 2024

It’s time to go cross-platform! We will take a feature written in Swift and use it in vastly different situations, including not only SwiftUI and UIKit, but beyond Apple’s frameworks and ecosystems. We will start with a baby step and introduce our feature to a third party view paradigm, Airbnb’s Epoxy.

Free 33 min
Episode 282 • Jun 3, 2024

We finish building a modern UIKit application with brand new state-driven tools, including a complex collection view that can navigate to two child features. And we will see that, thanks to our back-port of Swift’s observation tools, we will be able to deploy our app all the way back to iOS 13.

Free 31 min

All episodes

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Episode 303 • Nov 18, 2024

Let’s see how to integrate a SQLite database into a SwiftUI view. We will explore the tools GRDB provides to query the database so that we can display its data in our UI, as well as build and enforce table relations to protect the integrity of our app’s state. And we will show how everything can be exercised in Xcode previews.

Subscriber-only 36 min
Episode 302 • Nov 11, 2024

Interfacing with SQLite’s C library from Swift is possible, but clunky. Luckily there are friendlier, “Swiftier” interfaces the community has built, so let’s take a look at the most popular: GRDB. We’ll explore how it can help us avoid pitfalls and boilerplate required to use the C library, and how its typed SQL helpers can even help us avoid runtime issues at compile time.

Subscriber-only 35 min
Episode 301 • Nov 4, 2024

SQLite is one of the most well-crafted, battle-tested, widely-deployed pieces of software in history, and it’s a great fit for apps with more complex persistence needs than user defaults or a JSON file. Let’s get familiar with the library, starting with a crash course in interacting with C code from Swift.

Subscriber-only 36 min

Collections

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SwiftUI

Collection

SwiftUI is Apple’s declarative successor to UIKit and AppKit, and provides a wonderful set of tools for building applications quickly and effectively. It also provides a wonderful opportunity to explore problems around architecture and composition.

37 episodes 23 hr 50 min

Back to basics

Collection

The Swift language has grown over the years and become more and more powerful. It now boosts a comprehensive static type system (generics, existentials…), a suite of concurrency tools (actors, dynamic isolation…), and most recently even ownership capabilities (consuming, borrowing, non-copyable types…). In “Back to basics” we will focus on just one part of the language in order to uncover the deep theory behind that feature as well as provide concrete advice for writing real-world code.

8 episodes 4 hr 46 min

Composable Architecture

Collection

Architecture is a tough problem and there’s no shortage of articles, videos and open source projects attempting to solve the problem once and for all. In this collection we systematically develop an architecture from first principles, with an eye on building something that is composable, modular, testable, and more.

92 episodes 58 hr 30 min

A better way to create SwiftUI bindings

If you have ever created a binding using the get:set: initializer, you may want to reconsider. Doing so can hurt SwiftUI’s ability to animate your view. Luckily there is a better way. You can leverage @dynamicMemberLookup and subscripts to derive new bindings in a way that allows SwiftUI to propertly track where the binding came from.

Watch 7 min

Are mocks bad?

You may have heard that “mocks are bad” and that they cause you to test the mock rather than your application’s actual feature. That doesn’t have to be the case. It is totally fine to mock a dependency to a system that you do not control, such as the file system. You do not need to test that saving and loading with that dependency works (after all, that’s the mocked behavior!), but you should test how your application behaves when it tries to load or save data. For example, is data saved after each change to your app’s data? Or, if loading data throws an error, do you show an alert to the user?

Watch 2 min

How should you perform async work in a non-async context?

We often need to perform async work when there is no async context, such as in SwiftUI button action closures. In such cases it seems that you have no choice but to spin up an unstructured Task, but you may have heard that doing so it bad. So what are you to do? Well, there is an easy answer…

Watch 1 min

What people are saying

Rajiv Jhoomuck
@rajivjhoomuck

@pointfreeco ❤️: Thank you! 🧠: … The brain can’t say anything. It is blown away (🤯)!

Dad
@GeekAndDad

Three recent @pointfreeco episodes were so interesting I stayed in the treadmill 3x as long as usual and watched them all in a row! Walking may be challenging later/tomorrow... 😮

Luca Ceppelli
@lucaceppelli

I bought the annual subscription and after I watched all videos and played with the sample code and libraries I can say it was the best money I spent in the last 12 months.

Oscar Alvarez
@iOjCaR

So many concepts presented at #WWDC19 reminded me of @pointfreeco video series. 👏👏 So happy I watched it before coming to San Jose.

Prakash Rajendran
@dearprakash

Thanks @mbrandonw @stephencelis for the very pedagogical series with @pointfreeco Excited and looking forward to learn from the series

Maxim Smirnov
@Atimca

The best thing, that happened to me for a while. @mbrandonw and @stephencelis really provide a lot of new information according to #ios development and #functionalprogramming. All info could be used in real production without boring academics.

Felipe Espinoza
@fespinozacast

Watching the key path @pointfreeco episodes, and I am like 🤯🤯🤯. Super cool

Mike Abidakun
@mabidakun

Every episode has been amazing on Pointfree, yet somehow, you've managed to make these Parser combinator episodes even better!!! ⭐️⭐️⭐️⭐️⭐️

David Piper
@HeyDaveTheDev

Just finished the mini-series on enum properties by @pointfreeco! They pointed out what’s missing from enums in Swift and used SwiftSyntax to generate code to add the missing parts. Thanks for your work @stephencelis and @mbrandonw! #pointfree

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