Swift 2.0 also includes a lot of new language features and refinements. Expect to see blog posts exploring the features in more depth, and be sure to watch for the WWDC sessions covering these topics all this week. A few of the new features include: Error handling model: The new error handling model in Swift 2.0 will instantly feel natural, with familiar try, throw, and catch keywords. Best of all, it was designed to work perfectly with the Apple SDKs and NSError. In fact, NSError conforms to a Swift’s ErrorType. You’ll definitely want to watch the WWDC session on What’s New in Swift to hear more about it. Availability: Using the latest SDKs ensures you get access to new features and information about platform changes. But sometimes you still need to target an older OS, and Swift makes doing so much easier and safer. The Swift compiler now shows an error when you use an API that is too new for your target OS, and #available blocks can safely wrap lines of code to only run when on the right OS versions. Protocol extensions: Swift is very focused on protocol-oriented development — there’s even a session on the topic at WWDC 2015. Swift 2.0 adds protocol extensions, and the standard library itself uses them extensively. Where you used to use global functions, Swift 2.0 now adds methods to common types so functions chain naturally, and your code is much more readable. Swift-er SDKs: Swift 2 works even better with the Apple SDKs, thanks in part to two new features in Objective-C: nullability annotations and generics. The SDKs have been updated to annotate API that cannot return nil so you don’t need to use optionals as often. And with a true generics system employed by the SDKs you can more often preserve detailed type information in your Swift 2 code.

1. Swift 2.0
The programming language
Get ready for a change

2. A modern programming
language that is safe, fast,
and interactive.
“
”

3. Apple Gives Open Source a Swift 2 Kick

4. Swift is a powerful and intuitive programming language for
iOS, OS X, and iWatchOS.
WHAT IS SWIFT?

5. Swift is a powerful and intuitive programming language for
iOS, OS X, and iWatchOS.
Writing Swift is interactive and fun, the syntax is concise yet
expressive, and apps run lightning-fast.
WHAT IS SWIFT?

6. Swift is a powerful and intuitive programming language for
iOS, OS X, and iWatchOS.
Writing Swift is interactive and fun, the syntax is concise
yet expressive, and apps run lightning-fast.
Swift is ready for your next project — or addition into your
current app — because Swift code works side-by-side with
Objective-C.
WHAT IS SWIFT?

7. SWIFT
FEATURES

8. ERROR HANDLING MODEL
An advanced error handling model provides clear,
expressive syntax for catching and throwing errors.

9. ERROR HANDLING MODEL
An advanced error handling model provides clear,
expressive syntax for catching and throwing errors.
The new error model was designed to work seamlessly
with NSError and the Cocoa frameworks.

10. ERROR HANDLING MODEL
An advanced error handling model provides clear,
expressive syntax for catching and throwing errors.
The new error model was designed to work seamlessly
with NSError and the Cocoa frameworks.
Error handling code now looks like :

11. ERROR HANDLING MODEL

12. SYNTAX IMPROVEMENTS
New syntax features let you write more expressive code
while improving consistency across the language.

13. SYNTAX IMPROVEMENTS
New syntax features let you write more expressive code
while improving consistency across the language.
Here is just a sampling of Swift 2.0 enhancements.

14. SYNTAX IMPROVEMENTS
- Powerful control flow with do, guard, defer, and repeat
- Keyword naming rules unified for functions and methods
- Protocol extensions and default implementations
- Extended pattern matching to work in if clauses and for loops
New syntax features let you write more expressive code
while improving consistency across the language.
Here is just a sampling of Swift 2.0 enhancements.

15. AVAILABILITY
It has built-in availability checking to make it easy to build
the best possible app for each target OS version.

16. The compiler will give you an error when using an API
too new for your minimum target OS, and a new
keyword lets you wrap blocks of code in a conditional
version check to run only on specific OS releases.
AVAILABILITY
It has built-in availability checking to make it easy to build
the best possible app for each target OS version.

17. OPEN SOURCE
Unique combination of elegance, power, and safety has the
opportunity to move the entire software industry forward. It
is exciting to imagine what we will build together.

18. MODERN
Swift is the result of the latest research on programming
languages, combined with decades of experience building
Apple platforms.
Memory is managed automatically, and you don’t even need
to type semi-colons. All this modern thinking results in a
language that is easy and fun to use.

19. MODERN

20. INTERACTIVE PLAYGROUNDS
Playgrounds make writing Swift code incredibly simple and
fun. The Playground let you do following :
- Share curriculum to teach programming with beautiful text and interactive code.
- Design a new algorithm and watch its results every step of the way.
- Create new tests and verify they work before promoting into your test suite.
- Experiment with new APIs to hone your Swift coding skills.
- Turn your experiments into documentation with example code that runs within
the playground.

21. OBJECTIVE-C INTEROPERABILITY
Swift code co-exists along side your existing Objective-C
files in the same project, with full access to your Objective-C
API, making it easy to adopt.

22. OTHER FEATURES
- Swift has many other features to make your code more expressive:
- Closures unified with function pointers
- Tuples and multiple return values
- Generics
- Fast and concise iteration over a range or collection
- Structs that support methods, extensions, and protocols
- Functional programming patterns, e.g., map and filter
- Native error handling using try / catch / throw

23. References
https://developer.apple.com/swift/

24. ABOUT Us
We are ChromeInfo Technologies, a Mobile App Development,
Web Development and Software Testing company with
development center in India.
Mobile Application Development
Android Application Development
iPhone Application Development
iPad Application Development
Web Development
Software Testing

25. Follow Us

26. THANK YOU