1. iOS Spotlight Search
Branch wrap up most part of local and cloud indexing, call its API function and direct user to specific content with deep link.
2. iOS Scroll Performance
Reason: Use CALayer attributes corner radius, shadow or border, it will drop a frame due to the switch between CPU and GPU. If there are a lot of circle images like LinkedIn app, it will be slow to load while scrolling scroll/table/collection view.
Solution: Measure (Instrument in Xcode, Core Animation for GPU), Analyze, Fix, Repeat (until satisfied)
3. AR in iOS
Libs: OpenCV, Dlib, SpriteKit
GameFace provides more granularity to detect mouth open or close, lip position and other details.