SwiftUI week it seems, and a great debugging tip too…

Jeroen Leenarts: Hi, and welcome to the 44th episode of my podcast. My name is Jeroen Leenarts. And I've been developing software for over 80 years, developing iOS apps for over nine years and running logical catch for close to eight years. If you are an iOS app developer, you should listen to my podcast because we'll keep you updated on interesting articles and events you might not have heard about. In this episode, I'm going to talk about a pretty swift UI environment failure explains how to define custom environment failures in Swift UI. Why conditional view modifiers are a bad idea. Using foul wrappers in Swift UI app, find a problematic few in the few debugger. And Don is Monday morning tweet. So let's get started. One thing that you will notice in my episode this week, is that there's a lot of Swift UI related content in there. And that's due to the fact that I'm working a lot more with Swift UI in my day job. So that's a lot of hours spent developing swift UI code, getting to know the framework more intimately. And also wanting to look up more resource and learn about how you can use Swift UI properly. So this automatically, in my case, makes the articles on stretch, why stick out more on my feet. And that's also why I chose to have have very happy swift UI focused episodes this time around. I hope you like it, too. And actually, I hope you can use Swift UI in your day job or in your project as much as I can do right now. Because it's really enjoyable. And it's, it's something different than what I've been doing for the last few years with UI kits and related technologies. Also, with my keyboard journey, I'm still trying to discover what I really like I'm switching my switches, and I'm really trying different things every now and then. And yeah, I must say that on this Atrius keyboard, I'm getting the hang of it, and my words per minute is starting to rise again. So really enjoying that as well. On another note, my daughter is finally back to school after the summer holidays. And she was really looking forward to that. And this afternoon, she came home from school. And she was really happy it was it was such joy to see how much he enjoyed her day today. So I'm looking forward to a new year for her own school. And if this first day is any indication how the rest of the year could be, then then I'm all for it. So let's dive in. Every stretch why environment fell explained. streetwise environment is one of the most important pillars of Apple's declarative UI framework. There are many aspects of this infrastructure. In his article, Federico refuse all environment fails that swift UI offers. It's a long article, and there's a lot of stuff in there. But I think it's one of those articles. That's a very convenient overview with some more sample code on how you can actually use all these 50 Wind Farm values. So I think this is one that you will come back to every now and then when you're dealing with this switch to our environment values, and that you want to have a little bit explanation on them. So once you get familiar with Swift wise environment values, you'll probably want to define your own. And saloon has just the article on that how to define custom environment files is 50. Why saloon has done a previous article on how you can use the environment to pass value such as your locale and calendar to review archy. It is linked from this article. So we all know that the environment is somewhat of a key value store. But what if it would be possible to create your own custom key values? And that you can actually use those in your Swift UI app as well. Insurance article, you get to know how over at objective c.io They recently published a new article, Chris, I'd have actually wrote this one. They don't published very often, but once they do, it's, it's usually a very good article. So the article is titled Why conditional few modifiers are a bad idea. In the Swift UI community, many people come up with their own version of a conditional few modifier. It loves to take few and only apply a few modifier when the condition holds. What Chris has noticed is that in a lot of the sample code that he sees online about these types of conditional fuel modifiers there are some problems in there. So in his article, Chris actually explores what his problems are, and explains to you why you should be very careful when considering a conditional view modifier. So tread carefully when you're using conditional view modifiers and read Chris's article. To learn a lot more on details. Mark wrote an article on using File wrappers in the script UI app. A file wrapper is a bundle, which is a collection of one or more directories, folders and files that appeared as a single file. And finally, we all know these, because for instance, every app that you start on Mac OS is actually a file wrapper. If you want to see what these file wrappers look like what these bundles look like, select an application in your finder, right click it and choose Show Package Contents. So why should you use a file wrapper? You use a file wrapper when you want to save your App State multiple files. Suppose you're developing a website. A website can have multiple pages plus folders and files for images, videos, and custom CSS. By using a file wrapper, you can save all these files, and have it look like a single file to the person using your app. Most apps don't need to use File wrappers. But still, it's a very convenient thing to know about. And there are some special use cases that you really want to use this feature. So in this article, Mark explains how you can make your own file wrapper appear as a single file, and I can create a document file wrapper. So there's a lot of code in this article that allows you to get familiar with all the details of creating and using File wrappers in your own code. He also has a sample project available on GitHub that you can use to see how this looks in practice. The last article I wanted to mention is by Dominic Houser, it's a very convenient debugging thing, it's something you need to just know about. And once you're familiar with it, you cannot imagine how he ever got by without it. His article is called Find a programmatic few interview debugger. If you have a layered constraint issue that's being printed in your console, you could read that information and try to figure out what the problematic view is at that point in time. But there's actually an easier way, in the last line, Xcode tells you which constraint it chose to break. So when you see this message, you should copy the ID from this view. And with this address, you can actually look things up in the view debugger in Xcode. So Dominic explains everything with samples and example prints, and how it actually looks on screen in Xcode. But just knowing this one trick, it really allows you to visualize what these constraints are that are being broken when you see this lock message. So those are the articles for this week. Let's move on to Danny's Monday morning sweet. I always enjoyed this one. Stuart Lynch has been busy, he has been producing 10 videos to completion. And they are all scheduled for release for an update to my his To Do app series using iOS 15 and drawing functions. Once 50 Why fundamentals and five in the new series on imaging camera picker with zoom image view in Swift UI. Definitely check this guy out. Stuart has been on my podcast and he's a great video creator on YouTube. Ricardo is refactoring and detangling. A bunch of codes combined is involved. And the book by Donnie is very helpful. Leo GD on is building a Swift package from MailChimp and refactoring the network code. So it will work with iOS Swift, Neo and favor. He's also getting ready for an interview with Ariel Medallia on ASL and learning about migrating from Xcode projects to Swift package manager, a bunch of iOS 15 And watch OS eight bug fixes. Vincent is doing a new challenge this week and he's starting to post his content on tick tock, very curious how this all worked out. And Dennis says good morning. And it's the last week before he's going to have on a break and change jobs to the Dutch Railways as an iOS deaf for the rice planner. He is also working on a little Pomodoro app for the Apple Watch. And Jerome is getting started in his biggest side project effort opening a Twitch channel where once a week he will live called an iOS Mac OS from scratch to the App Store. Limited DFS is saying Happy Monday he's working on a watch West app for the bluebird app, and also combating some self doubt with his new piece of comic. And it's a very fun comic about what any lifestyle looks like how it is in practice and how you feel about it afterwards. And Miguel is saying Happy Monday I've been teaching myself how to integrate share action extensions to perform a task before launching his app. And Danya Sadie is trying to wrap up a new stretch y three app that he's hoping to release when iOS 15 goes live co spending some time with his family and he is apparently in some cornfields and picking some beans on the farm. Adam is learning core audio. And Dominic is currently almost at the end of Shawn Allen that take home project course. So all in all, a lot of stuff is happening. It's it's extremely busy what people have been doing, like compared to last week. And it's really nice to see how everybody is really picking up the pace again and getting ready for releasing new products as the IFRS 15 release gets closer and close. And that's it for this week. I hope you enjoyed my podcast. Listen to me again next week. Most of all, read me on Apple podcasts or any other platform that you're capable of reviewing. And just let me know what you think about my podcast sent me a DM on Twitter at app Force One. Talk to you again next week.