9D P E F ʹ ͭ ͍ ͯ ͷ ൃ ද 4 - Platforms State of the Union - Getting the Most out of Playgrounds in Xcode - Source Control Workflows in Xcode - What’s New in Testing - What’s New in Energy Debugging - New Localization Workflows in Xcode 10 - Measuring Performance Using Logging - Building Faster in Xcode - Creating Custom Instruments - Optimizing App Assets - Advanced Debugging with Xcode and LLDB - Understanding Crashes and Crash Logs - Behind the Scenes of the Xcode Build Process - Testing Tips & Tricks ଟ