xCode 9 and Swift 4 : What is new in xCode 9 with swift 4.0.
If you are looking to know about xCode 9 then go through this video may help you a lot.
1. Refactoring.
2. Extraction of Methods.
3. Highlight the scope of code.
4. Shortcut to manage font size .
5. Single Click for required methods.
6. Wireless Debugging.
Dear Friends You can also read more
https://developer.apple.com/xcode/
What is new in ios 11
https://www.apple.com/in/ios/ios-11/