Issue 183 – May 14th 2019

Business

What to Expect From Marzipan

With excitement starting to grow for the potential announcements at this years WWDC, @chockenberry looks ahead at what we might expect from Marzipan – not on the technical side, but more on how it will affect product development, design and marketing. It’s a good read. iconfactory.com

Swift

How To Use Opaque Return Types in Swift 5.1

Swift luminary @twostraws has been busy again this week with not only an update to his article summarizing what’s new in Swift 5.1 but also this more detailed article, looking at how to use Swift 5’s new Opaque Return Types. As ever, it’s a great read. hackingwithswift.com

Pure Functions in Swift

Whilst pure functions – functions that produce no side effects and don’t rely on external state – may seem like a more theoretical topic than a practical one, this weeks article, from @johnsundell may well change your mind. swiftbysundell.com

Express Impossible Code in Swift with Never

On the face of it, RxSwift’s Never type may seem similar to either Void or NSNull but as @guptron illustrates in this article, Never represents a different concept and one that can be particularly useful when working with generics. medium.com

Code

UIButton: Padding Between Image and Text

The title of this article belies it’s complexity. @noahsark769 dives into the suprisingly complex world of edgeInsets and intrinsicContentSize . noahgilmore.com

Swift For Tensor Flow – Model Training Walkthrough

Maybe it was due to the fact that Google I/O 2019 was on this week but I spent a bit of time this week getting up the learning curve with Tensor Flow for Swift. Although I’m by no means a TensorFlow expert (at least not yet ) I did enjoy this walk-though which shows you how to build your own image classification model. tensorflow.org

Download Files Sequentially Using URLSession Inside OperationQueue

@soulchildpls illustrates some of the power of NSOperation with this tutorial showing you how to write your own custom NSOperation subclass to download files sequentially using URLSession . fluffy.es

Videos

How To Create a Bar Chart in Swift

Previous Swift Developments sponsor Macaw got some love this week with @seanallen_dev using his latest video to show you how to use the Macaw framework to create an animated bar chart. youtube.com

Finally

Swiftenstein

I vividly remember playing this first time around! Great work from @nicklockwood bringing back one of the classics. github.com