Xcode 9 is a comprehensive development tool for creating applications across Apple platforms, featuring major enhancements and new functionalities. Key updates include a new build system, improved debugging capabilities, and expanded support for asset catalogs and refactoring tools. Overall, Xcode 9 offers significant quality improvements and innovative features aimed at streamlining the app development process.

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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