Xcode is the complete developer tool set used to create apps for Apple TV, Apple Watch, iPad, iPhone, and Mac. Xcode 9 includes overall quality improvements as well as extensive new features.

1. Click to add text
What's new in Xcode 9?
Features and updates

2. Content
1. What is Xcode 9
2. Highlights of Xcode 9
a. Asset Catalogs
b. Building and Linking
c. Capabilities
d. Debugging
e. Instruments
f. Interface Builder
g. Refactoring
h. Simulator
i. Compatibility
3. Conclusion
Highlights of Xcode 9

3. 1. What is Xcode 9
Xcode is the complete developer toolset used to
create apps for Apple TV, Apple Watch, iPad,
iPhone, and Mac. Xcode 9 includes overall
quality improvements as well as extensive new
features.

4. 2. Highlights of Xcode 9
 Refactoring
 Super Fast Search
 Debugging
 Source Control
 Xcode Server Built - in
 New Playground templates
 New build System

5. a. Asset Catalogs
 Name colors support.
 Added wide gamut app icons.
 Added a larger iOS marketing to the App icon set.
 Added support for HEIF images.

6. b. Building and Linking
 Added a preview of a new build system written in swift.
 Provides higher reliability.
 Improves the performance on overall build system.
 To chose into the new build system for a project or
workspace, choose File > Project settings or file >
Workspace settings, and then choose New build
system (Preview) for the Build system type.

7. c. Capabilities
 New configurations for iOS hotspot and for multi-path -
TCP.
 New background mode for watchOS for use with audio
recording and turn – by – turn directions.
 New mode for tvOS background fetch.

8. d. Debugging
 Network debugging for iOS and tvOS device
– Debug iOS and tvOS device over Wifi or wired networks
– Connect via Bonjour or enter an IP address.
– IOS devices need to be plugged-in once to enable network debugging.
 Main Thread Checker
– Detects Appkit, UIkit, and WebKit method call that are not made on the
main thread.
– Automatically enabled during debugging.
– Main Thread Checker works with Swift and C.
 Enhanced the breakpoint navigator with deep filtering.
 Added visual indicators for modified breakpoints.
 Enhanced iOS energy gauge.

9. e. Instruments
 New split view for pinning graphs in the graphing area of a trace
document.
 Added an All strategy and moved the strategy picker to a new
toolbar at the top of the trace document.
 Enhanced metal debugging instrument.
 Metal system trace VR support for viewing events such as
compositor activity, pose queries, and more.

10. f. Interface Builder
 Added support for using named colors from the asset catalog.
 Added support for the new margin and baseline view constraints.
 Added support for auto layout safe-area guides.
 Added support for full screen watchOS apps.

11. g . Refactoring
 Global rename across Swift, C, Objective C.
 View all the changes in one place.
 Converts method signatures between Swift and Objective C
formats.
 Updates properties, getters, setters, and synthesized as needed.

12. h. Simulator
 Multiple concurrent simulators.
 Share information with Simulator from Maps, Photos, and Safari.
 Record videos of simulators.
 Get help by choosing Help > Simulator Help.

13. i. Swift
 One compiler for Swift 4 and Swift 3, Swift 4 and Swift 3 targets
can be compiled together in the same project.
 Improve migrator experience that support migrating only select
targets to Swift 4.
 Faster generic code and decreased code size.

14. j. Compatibility
 Xcode 9.0 requires a Mac running macOS Sierra 10.12.4 later.

15. 3. Conclusion
Anyway Xcode 9 is awesome !!!!

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