Preparing for Try Swift

Jeroen Leenarts: Hi, and welcome to the 71st episode of my podcast. My name is Leenarts. And I've been developing software over 20 years developing iOS apps for over 10 years, and I'm running that code cash for over nine years. If you're an iOS app developer, you should listen to my podcast because it will keep you updated on interesting articles, conferences and events you might not have heard about. In this episode, I'm going to talk about what's new in Swift 5.6. Building a custom combine operator for exponential back off UI Kit application with Swift UI views, using the Swift UI view in UI Kit app as an individual component, supporting all SDK versions with Swift, and of course, daanish, Monday morning tweet. On top of that, I'm going to mention the Swift code and a Cocoa Touch meetup that's taking place next week. So let's get started. This week's been a busy week for me, I've been preparing a workshop that I'm doing tomorrow, I'm actually doing a workshop for stream at try Swift. So looking forward to that one still need to do some preparation today. And tomorrow morning, which is always the case with these content creation things you always keep on tweaking and keep on adding things last minute, just do you know, you can just make it a little bit better. At least that's what help. So I'm looking forward to this one, probably I'll be a little bit nervous when we get started. But once the show was on the road, I think this workshop will work out so brilliantly. There's no tickets available anymore. But once the workshop has been done, I will have a surprise few available in regards to content that's been created for this workshop. So keep an eye out on my Twitter. And who knows maybe it has some interesting news, either tomorrow, or maybe later in this week. On top of that, the weather is really improving hair in the Netherlands, a lot of sunshine, it's still very cold, but at least the sun is out and just walking outside with like two degrees Celsius in the sun. It's already really nice. And you only need to bring my hoodie to keep myself warm enough. So that's good as well. Conference preparations are ongoing as well. So I'm making sure that I have all my ducks in a row in that regards. By the looks of things I'll be attending swift heroes tech around in Belgium threesixty hidef, app DEF CON, and swift leads by Adam. So who knows, maybe some more will be added. But there's a conference I did want to mention specifically, I will not be attending that one myself, because it's too close to another conference that I'm actually going to, and that's swift comm. Swift Khan just announced that they are officially back in 2022. So the conference will take place in Cologne, that's in Germany on August 17. And 18th. Highly recommend it. And they already have some interesting speakers lined up for their event. If you want to know more about Swift calm, you can go to Swift comm.com. So a little over a month out of Swift heroes looking forward to that one, really excited. And yeah, just hoping for the best with COVID that it's doesn't flare up towards the summer, but things are looking good. And things are improving every week in the Netherlands in that regard. familywize, my daughter is going to check some interesting things for her for her profile. If you've listened to a podcast before you probably know a little bit about that. So hopefully this will work out and I can share more on this. In one of my next episodes. My son, we just had a week long vacation with with the family which stayed at home. But he was really looking forward to going back to school. And the immediately once he saw his teacher, he mentioned to her that he missed her. So that was great to see as well. And let's hope he keeps on enjoying school as much as he is right now on his fourth year. Yeah, let's just get started with the topics of this week. First article. What's new, in Swift 5.6. Yeah, this is an article that's too too good not to mention, it's if you're a little bit into keeping up to date with iOS content. This is one that you probably have already seen. It's an article by Paul Hudson. And it's an overview of what's new in Swift 5.6. I can't go over all the details that's in article but I just say check this article read up on it, because this is stuff that's coming your way in a future Xcode update. So check it out. And any content by Paul is always good in my book. So make sure to keep an eye on his website if you are not doing that yet. So the second article is by Peter Frieza. It's called building a custom combined operator for exponential back off. So this is an article about using combined and doing exponential back off. So what is exponential back off it basically means if something fails, then you try again, after certain duration. If that fails, then you try again after double the waiting time before trying again if again fails, you double the waiting time again. So it's a nice overview of how you can use combined to add more complexity to a re Try operation that you need to do, for instance, for networking, and it's another one of those good articles that Peter can write. And yeah, some useful tidbits in there. And definitely check it out. If you want to use combine more often for networking. Then there's an article by Thomas fatter, again, keep on mentioning articles where this guy over and over, probably because he's he's onto something with his blog, augmented co.io. So the article that he wrote is called UI kid navigation with Swift UI views. It's a nice overview of how you can use Swift UI, while still hanging on to the UI Kit navigation that's been working so well for us over the years, because one of the challenges that I see people are having when using Swift UI is to make sure that their navigation structure works decently. And they just do that by far falling back on UI kit, navigation, and then embedding the Swift UI views in the UI Kit structure. So this article is in good overview of this practice. And there's an example projects attached that you can have look at and copy some some tidbits of this code to your own code base, if you want to apply this pattern to your code as well. Then there's an article by Giovanni Monaco, using the Swift UI view in UI Kit app as an individual components. So the Swift UI framework was created in 2019, or it was released in 2019. And in just a few years, it's been looking like it's going to be the future of iOS development. But it's also true that UI Kit has been around since 2008. So especially if you have been developing for a few years, you will have apps developed but UI kit, right? So why don't use all that swift UI code has to offer to give your app a makeover, why not use all that swift UI. Since swift UI is the future of iOS development, it's good to sort of like get started. And what yovani suggest is that you start replacing bits of your code base with Swift UI based pieces, and but setting it up in such a way that the Swift UI piece of code is usable as a sort of component. So that you, if you use the same structure on different locations in your code base, you can reuse this bit of code or this component, really, so that you also make sure that you don't create too much duplication in your code base. It's a nice interesting way of actually using Swift UI in UI Kit app in interface builder, which is a fun exercise. So any which way that you look at it. And it's, it's a good way of looking at how you can integrate swift UI and UI kits as well. So couple this with UI Kit navigation for swift UI article that was the previous article. And just doing these two things, I if you start doing this, I think you're well on your way on upgrading your existing code base for swift UI base future, while gradually transitioning yourself over to this new future. And then the final article is on chime hq.com. It's written by a mosquito. I hope I pronounced that correct, Matt. So I'm supporting older SDK versions with Swift, the Swift package manager has made it easier than ever to make library with a wide compatibility by default, Swift package manager even supports Linux, right? So however, it can be quite tricky to support different major iOS and Mac OS SDK versions. Swift provides a number of conditional complex conditions that you can use, and that will help you try and achieve this goal. But there's currently no way to determine which SDK you are building against, or maybe there is. So in this article, Matt goes into some details of things that you can do to make sure that you have a code base that can actually compile in a way that is predictable to you. irregardless of what specific SDK, somebody is compiling your package against this could indeed mean that you would deliberately fail the compilation if your code base is not working, or should not be available on a specific SDK version. But if you want to support older SDKs versions, then yeah, there is some things that you can do. And this article, gives you some insight of things that you can try. And that's the final article of this week. There's also a nice Cocottes meetup happening next week. So it's it's an it's the first in person meetup back. Okay, so no, of course, the event itself, the presentation will be live streamed, so more details if you sign up on their meetup page, but I have to check when not to connect to this meetup myself, but I'm definitely looking forward to going to inperson meter with cokehead Snell again. The issue that I'm facing is making sure that I have somebody available to take care of my kids while I'm out of my house. Going to This, this meetup. And yeah, in this case, it definitely is like kids when going to a meetup. So I hope I can put something together and make sure that I'm available to go to this meetup. Next week, so otherwise, I'll be watching the live stream. And then there's done nice morning morning tweets. So yeah, a lot of things have already been posted by people on this. So there's Pawel who's cannot focus on anything. job related. He's living in Poland. So there's some some big things happening in the world right now that we are all very much aware of. And then there's Christian Kurosaki. Yeah, he's also going to the Polish Ukrainian border later this week to give free transportation for refugees. And he will also go to my wash out to pick up a few old MacBooks and PC laptops given by friends for Ukrainian orphans that are now in a local orphanage in loads. So he's also not able to focus on work on code related things, but he's doing whatever he can to, to make a difference in this horrible situation that's happening in the Ukraine. And then there's a couple more cards, he planning on finishing the review process of his 100 days of stretch, why and maybe attempt to pass the final exam on Sunday. And he also wants to learn some Python syntax. And Dominic girdle, is building his new app pill, which lets you add medication and set notifications. It also shows you whether your newly added medication has some interaction issues, which are already saved medications. So he's building and he's trying to figure out where this is viable app idea. And then there's Sahil. He's going through the ultimate perfect portfolio series by Paul. And yeah, looking forward to his results. And then there's an article on developer. Today he's publishing an article about the NEC member look up an interesting topic in Swift's attributes. I don't think that I'm aware of this article yet. potica? Did you add it to the iOS dev directory. So that's always a good idea, if you have a blog, or some other video content, is to put it on day four verse iOS, def directory, it's a pull request away. And then there's a lot of people in the iOS community that gain visibility on your content, because it does look like an interesting piece that you're writing there. And just keep at it. And that's it for this week. These are the links and articles I wanted to mention. Something that's happening this week is also the Apple event. That's I think, on Tuesday, and I'm planning on having a Twitter space with Stefan again on on Wednesday about this new app, basically, about the new stuff that's being announced. Hopefully, on Tuesday. It's kind of weird, getting excited about something technology in Apple related. Consider world circumstances. But yeah, I do think that it's good to be able to enjoy those things, even though there are some issues in the world. So right now. Enjoy your week. And good luck with all the projects and code bases that you're working on. Talk to you again next week. If you have any feedback, please let me know through Twitter. I'm just a DM OA. You can also add mention me at app Force One. And I always look forward to getting your feedback and learning on what you are working on and any challenge that you might be facing. So keep it up. And definitely review me on any podcasting platform that you listen to because it really helps spreading the word on my podcast. Talk to you again next Unknown: week.