Stewart Lynch News
2025-3

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https://stewartlynch.kit.com

This week's video:
A Case for Custom Bindings in SwiftUI: Essential Tips and Tricks

In this video, I’ll show you why Custom Bindings in SwiftUI are a powerful tool you should master! While they may seem intimidating at first, I’ll break them down into easy-to-understand examples that will help you integrate them seamlessly into your SwiftUI projects.

We’ll cover:

✅ Creating custom bindings for optional values (String, Int, Date)

✅ Binding computed properties for better control

✅ Using bindings in ViewModels for better state management

✅ Improving efficiency and clarity with inline binding syntax

By the end of this tutorial, you’ll have a solid reference project that you can keep coming back to whenever you need to implement custom bindings.

What is coming?

Next week I will be starting 2 part video series on creating an "Over Top View"

Sometimes your UI calls for a bit of creativity! Instead of using a modal sheet or a navigation stack, you can display an Over Top View—an overlay that allows you to edit content while still seeing the original view behind it.

Oldie But Goodie
JSON Decoding Playground

Working with JSON is a fundamental skill for any Swift developer, whether you’re mocking data, fetching it from an API, or storing it locally. In this video I created back in 2021, I introduce a multi-page Swift Playground designed to help you test JSON decoding from multiple sources—your app bundle, a remote URL, and the documents directory. It still works today.

📌 What You’ll Learn:

✅ How to decode JSON from different sources

✅ How to create Swift models for JSON data using tools like QuickType and Ducky Model Editor

✅ How to fetch JSON from an API using async/await

✅ How to save JSON to the documents directory and retrieve it later

This Playground is a great way to experiment and debug JSON decoding before integrating it into your projects. You can download the Playground from the link in the video description and follow along.

My other stuff

Channel Listing App

A Searchable Mac app containing a list of all of my YouTube videos including the ability to watch them in the app and download starter and completed source code

Free on Gumroad

CustomGPT

A custom ChatGPT that has indexed the transcripts of my videos.
Add to your ChatGPT Sidebar

Smile4Me Course

Learn how to build a multi-targeted app using a Jokes API.
Don't let the low cost of the course fool you into believing that low cost means low content. 6.5 hours of content and 56 videos.

Enrol in the course

Affiliate Links

Below are a number of affiliate links for products that I not only endorse but use all the time. I will never endorse something that I do not believe in.

RocketSim - Build Apps Faster

This is an invaluable tool when working with the simulator in Xcode

https://gumroad.com/a/122988499/ftvbh

BigMountain Studio Books

Mark Moeykens is a master at creating SwiftUI reference books. I have purchased every one of these books and refer to them all the time.

SwiftData Mastery in SwiftUI

https://www.bigmountainstudio.com/swiftdata/77jt8

SwiftUI Views Mastery

https://www.bigmountainstudio.com/views-16/77jt8

SwiftUI 5 Book Bundle

https://www.bigmountainstudio.com/book-bundle/77jt8

Combine Mastery in SwiftUI