Learning every day

Jeroen Leenarts: Marco Arment updating overcast you straight URL Samuel Goodwin from roundball software has released two great articles, one on obscure API's you might not have heard about, and the other one about progress expectations in unit testing. Phillip Nemecek has released an interesting article on forming an iPhone app to iPad and he wrote down his experiences. Be the Steinberger released a new article on presenting pop ups from Swift UI. Dimitri shipping and Nikita oppo myself have released an article on creating app clips on iOS 14. It's a very elaborate article. Antoine has released a new article on the Swift league blog, Jason Parson district explained with code examples. John Sandow talks on his blog about formatting numbers in Swift. So it talks about calculating the number of days between two dates swift.org has released a new concurrency roadmap. Hi, my name is sudo Linus, I've been developing iOS apps for eight years. And I'm also running the Dutch cocoa ads for over seven years. If you want to support my podcast, please subscribe in your podcast player of choice. Follow me on Twitter. And if you have any feedback, please contact me through SpeakPipe comm slash app Force One. Also, if you are you know someone that likes to sponsor me, please get in touch. Last week I released my first interview with Antoine fillet. And I must say that the response on that was really great. I've received a lot of downloads and a lot of comments on on the actual content. And I look forward to what your people think of my next interview with Dani whilst that I will be releasing this week. I've also have a great schedule ready for you all. I have a number of great names. I have promises from Daniel Steinberg, Pedro Pinera, Pedro Carrasco, le Shapiro, Ben Sherman, and Anastasia for over to actually come and join me for an interview in a future episode. Another week, another Monday morning tweet by Donnie wells. Donnie has received a lot of responses this week. And I will just pick a few of those. Peter Molnar started his third week as an iOS developer. He's still feeling a bit under the weather, because, well, it's hard doing something new port files, info, peerless optimizations, RX swift bass, but he's missing engineering practice. He said he has accepted the challenge. And I'm sure he will do great. Alexander been building his very first app in UI kit, the concepts and idea very basic, but he's making great progress. And he's learning a lot, which is always great. Chris Caffery is building an iOS app in Swift UI, and he's planning to track weightlifting workouts. Tommy says good morning, and he's thinking about exploring AWS lambda functions with Swift during the week. And he's also planning to persist information on this app, probably using core data and use the defaults depending on what is caching. And Reus has bought a brand new iPad Air for last week. Gonzalez is trying to ship the first private beta of with prime dot coms iOS app this week. And they're also looking for a second iOS engineer. This young released an app a couple months ago, and he wants to do some marketing this week. He's aiming to increase the number of downloads ever he is planning on catching up with concurrency news. And Maxime has released his Dutch words learning app for capitalists written in Swift wind combined with composable architecture. Tiaan has recently released another update to his outgoings an app to track recurring expenses, which is built in Swift UI semi cut is continuing to learn with 100 days of Swift and she's looking forward to do her first small projects. And there you have it, a lot of people, especially learning a lot of new things, which is always great, and best wishes to everybody. I wanted to do a shout out to mobile optimized 2020, an online conference on mobile development. It's happening at the beginning of November, November 6, and seventh, and they have discount tickets available right now. I have a small section on coca hats and now this week, they released their video from Donnie waltz presenting on adopting a reactive mindset. Look it up on YouTube. If you'd like to join them online for the next meetup, go to meetup.com and RSVP. Let's begin with the news of this week. In the underwriter podcast, Marco Arment talks about modernizing the overcast code base from from Objective C to Swift UI. And it's a very interesting take on on his views on Swift UI. He says he says he's late with adopting swift UI but he did that on purpose and he has some very sound reasoning behind that. Samuel Goodwin has two articles. I'll start with the first one obscure API's. He's running about five API's provided by Apple that you may not know about search gate language detection, asynchronous fetching, progress, and custom bindings. He will spend a little bit of time on each one then encourage you to actually go look at these five API's because all five of them are actually quite interesting. His second article is on progress expectations. Expectations are pretty common when you're writing unit tests. Generally, an expectation represents an event you want to wait for any unit test, you can tell the test to wait until the expectation is fulfilled. And this works great if you have something that actually has completion handler. But what if you need to observe some total results and you don't have completion handler, but there is some threshold value that indicates that the actual execution has progressed to the point that it's actually completed and successful. In his article, he's gives a small example of how to deal with that. Phillip is talking about porting an iPhone app to iOS. And he writes about his expectations. He also has some tips and approaches to use. If you don't have the time to build an iPad version from scratch. He talks about a number of items backwards compatibility with sidebar for iPad, bigger margin, custom cell design, non abbreviated content, and popovers form sheets and page sheets because we all know that elements that were great on an iPhone, they look totally different on the iPad, and he has some approach to deal with that and what it actually means. Peter Steinberger talks about presenting popos from Swift UI. When he was working on the new Swift UI wrappers for their iOS PDF SDK, he discovered an interesting problem. They offer various pre built view controls such as search or an outline view. And these are usually presented as popovers on the navigation bar. The PDF view controller they create offers various convenience methods to take care of presentation, these methods take a center of pop off to use as an anchor, which the object of pop off arrow points towards. But this is very specific to UI kit. So he was wondering, is there a way to get such anchor behave to toolbar buttons that are managed by swift UI. In this article, he talks about this approach and their actual solution. exite has created a very elaborate blog post about how to create app clips in iOS 14, it goes into a lot of detail. And I think if you just follow along with your code base on this specific article, then you will end up with an actual app clip for your app. They talk about the various restrictions that you may need to take into account when creating an app clip, and all the steps that you need to take to actually make sure that you have a working app clip. Antoine has an article on JSON parsing and swift explained with code examples. Jason parsing the Swift is a common thing to do almost every empty coach Jason to show data in a visualized way. Parsing Jason is definitely one of the basics you should learn as an iOS developer. Decoding Jason is Swift is quite easy. And it does not require an external dependency. The basics API that come with Swift will be enough to do the job. And he just explains how you can actually do the Jason decoding. A very nice introductory article on Jason decoding on iOS. John Sundar from sweat by Sunday has an article on formatting numbers in Swift. On first glance, think formatting numbers, how hard can it be? Well, John explains what details are involved. He has a long form article about the number formatter, it's it's your biggest enemy and your biggest trends when you want to display a value to the end user. He goes into a lot of detail. And he has also some recommendations if you want to do domain specific formatting. For instance, if you're in a in a European area, or if you're in the US, you want to display currencies different and he talks about that as well. So Ron has a similar article on getting the number of days between two dates in Swift. There are a few variations when dealing with counting days. So you need to ask yourself the definition of a day beforehand, certain goes into the details of what his definition of a day might be. And then for each version, he has his own approach to actually make sure that you can present us with the correct number of days between those two dates. It's an interesting article detailing some of the intricacies of formatting date related values. swift.org has released their swift concurrency roadmap, they go for a two phase approach. In the first phase, they add basic syntax to the language that allows you to do actor isolation. And in the second phase, they're planning on extending that to create what they call full XR isolation. Read up on article to see what actors are and what this all involves with dispatch queues and everything that is related to this and why it is an important new addition to the Swift language. And that's it for this week's episode. 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