I already wrote overviews of all the new features of Swift 2 and the new features in iOS 9, but I wanted to get into more depth with some of the Swift 2 language changes so you could start getting to grips with it.
So, I wrote four short articles explaining four key new features in Swift 2 syntax: try catch error handling, guard, defer and API availability checking.
You can work through them in any order you want – enjoy!
UPDATE: I put together a huge and free collection of Swift example code, so if you're upgrading your code you should definitely check it out.
ifstatement and adds extra optional unwrapping power, amongst other things.
if #availableto run version-specific code in small blocks.
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