WWDC 2015 and Elements

It’s been another exciting year at WWDC, even though i personally did not make it out to San Francisco this time. But staying home also has its upsides, as it means I had lots of time to dive into what’s actually been released.

As always there are many things new and coming in the Apple ecosystem that affect our Elements compiler, and with that Oxygene, C#, Silver and of course Fire. Let’s have a look.

New SDKs

Like every year, WWDC brings new editions of OS X and iOS, namely version 10.11 and 9.0. This time around, these new SDKs add not just new functionality (of which there is plentiful), but Apple also made some pretty drastic changes to the API headers, mostly in service of better inter-operation with Swift.

Because most of the headers use new Objective-C language features, such as annotations of nullability and (limited) generics, the new SDKs do not cleanly import with our current FXGen tool. After all, FXGen cannot know about new Objective-C syntaxes that just shipped.

But worry not. Myself and the team have been hard at work this week to update everything, so with the new Elements beta build we will post today (and the new official 8.1 update release coming next week), the new SDKs now import fine and are fully usable – including all the new frameworks and APIs. So get coding!

We’ll continue to work on the import so that for the next release (Elements 8.2, which goes into beta soon), we’ll be able to leverage a lot of the new information these SDKs headers now expose, which will allow us to represent Cocoa APIs even better in Silver, C# and Oxygene. For example, APIs will reflect the more accurate nullability information that’s now available, making them easier to deal with – especially from Silver.


Now, in addition to new iOS and OS X SDKs, Apple also shipped a third, brand new platform SDK: watchOS. On the SDK level, watchOS is very similar to the existing SDKs for Mac and iPhone – it’s just a bunch if frameworks.

In fact as part of the new work on the importer, the watchOS 2.0 SDK is already importing fine, and our compiler is already happily building against it. But of course fully integrating Watch support is more involved – there are many parts of the toolchain and the IDEs that we need to review and expand. Working on this will be a high priority over there next couple of months as watchOS gores thru the betas, and we plan on shipping watchOS support in Elements 8.2 in the Fall (and of course make it available incrementally in the betas, prior to that).

Swift 2.0

The third and last big thing to mention is of course Swift. At WWDC, Apple introduced Swift 2.0, which brings many cool (and some awkward) improvements to the language. Like with version 1.0, there’s a lot tom like here, but also some things that have us scratching our heads in terms of syntax choices ;). But in general, we’re very happy with how Swift is evolving.

Of course we already started on bringing Silver, ur implementation of Swift for .NET, Java and Cocoa, up to speed with the latest language changes. Some parts were easy to do, while others require some more thought.

For example, Apple added ”Error Handling” to Swift, but it is very different from exception handling as it is needed on .NET and Java (and supported in Silver via a Language Extension). We have some cool ideas hewn to integrate the two in a way that’s convenient and intuitive, but we’re still fleshing out the details.

We’ll be working on adding Swift 2.0 support over the course of the next couple of months, as part of Elements 8.2 (and remember that Swift 2.0 itself is in beta right now as well, and bound to change more between now and the time Xcode 7 ships. In fact, in there WWDC sessions Apple was already talking about features not in the current beta release yet).

We’ll update a page on our documentation site with progress on Swift 2.0 support as things move forward.

Let us know what you think. And make sure to check out Elements, if you have not already!

marc hoffman

Chief Architect and CEO here at RemObjects Software. Project Manager for Elements and lead developer of Fire, our awesome new development environment for the Mac.