After WWDC, I'll keep it Short and sweet

Jeroen Leenarts: Hi, and welcome to the third episode of my podcast. If you're an iOS app developer, you should listen to my podcast because it will keep you updated on interesting articles and defense you might not have heard about. In this episode, I'm going to talk about a number of articles on async await several articles on the new bottom sheet in iOS 15. What's new in Xcode 13 Pull to Refresh in Swift UI with refreshable. build apps that share data through cloudkit and Core Data arc in Swift basics and beyond. And finally, the ultimate application performance Survival Guide. As you can tell, that's quite a number of things I want to go through. So let's get started. First off the articles on async await. I have two articles for you one by Ben Sherman and one budoni waltz both reflecting on what combined will be in async await worlds. As we all know, async await has been announced in WWDC 2021. And both these articles they reflect on what async await will do to actually the usability of combine and its future. Both come to a similar conclusion. async await is something that will be available in iOS 15 and onwards but looks of things and combine is something that you can use on earlier versions of iOS. So they both expect both Ben and Donny, that combined is something you'll be using for the next few years still, regardless of what will happen to async await and combine. They do expect that if you are using iOS 15 as a minimum target, then that the usage of combined will drastically be reduced because async await is a much more convenient API to do asynchronous operations. So I have three articles on new bottom sheets in iOS 15, one by Philip Nemecek, one by Matuson. matric and one by Antoine formulae. Just have a look at these three articles and see which one you like best, all three are great resources, and you should subscribe to their blogs. And of course, the new bottom sheets in Swift UI is a great addition. There's also a nice article by Paul Hudson on what's new in Xcode 13. It goes into a lot of depth on what's new in Xcode 13. If you haven't watched the WWDC video on what's new in Xcode, then this article is the next best thing. And then onwards to an article by saloon. That's another great addition to Swift UI. And it's the pull to refresh in Swift UI with refreshable. If you want to have a refreshable list in Swift UI, then you only need to apply a modifier refreshable. And all the basic plumbing will be in place to allow you to refresh the list with a pull to refresh gesture. Finally, there's four videos from WWDC that you might not have watched. And these are four videos that I really think you should watch, because they can provide you with great ideas, and great tools for your next project. The first one is built apps that share data through cloudkit and core data. It's very easy to share data for an end user across their devices, you just need to use Cloud kit for that. And if you also use coded data, if you also use core data as a persistence layer, it's even easier than that. There are some limitations and some things you need to be aware of. But it seems that in iOS 15, a lot has been improved on this architecture. If you want to store your data in core data and sync it to cloud get to that uses other devices. And this is a session you should watch. Another interesting video on WWDC is arc in Swift, the basics and beyond. Basically, even if you're new to Swift or if you're very familiar with Swift, if you have a background and Objective C or not. Knowing what arc and Swift does, is very important. watching this video will probably explain some of the more strange object lifetimes and memory related issues. You might have seen over your projects and code. This article goes in depth a bit. But I think it's important knowledge to have if you're an iOS developer, because automatic reference counting in Swift is something that you have to deal with, even if you're not explicitly retaining and releasing your objects. So I highly recommend you watch this video even if you're very familiar with the concepts. And if you're not familiar with concepts, then especially watch this video because it's it's very basic stuff that you just need to know about. Another one that's very interesting to me is distributing apps in Xcode with Cloud signing. That's also a video from the WWDC. It's, it's an interesting thing that you can do just offload all the signing of your products. So no more provisioning profiles, no more keys, or at least the management of that manually. You just ship it off to App Store connect and App Store connect takes care of everything. At least, that's what I hope. And then there's ultimate application performance of FIFO guides. That's the last video of the WWDC, I want to point you at. Performance Optimization is not something that many people have to deal with. But I think it's a good reminder to just get in touch with performance optimization as a concept. And know what metrics and tools there are available if you have to do it. Because nowadays, you don't have to do performance optimization that much anymore on iOS. Back in the day, it was you had to do it like pretty much every few weeks. But still, just knowing what is available. What are the triggers to actually start doing this process? Very good things to know about. And I think the performance survival guides by Apple is quite a good overview, including tools and tricks that you can actually apply on your own code base. And it's also fun to just put your own project through its paces with some performance measurement tools just to see how you're doing right now. And with that, I just want to keep it short to this week. We all had a WWDC week and we're all still processing the contents of the of the last week. I'm doing that myself as well, and it's a lot so I want to save you some time and talk to you again next week.