Xcode 12 is adding a new metric to objectively track how smoothly your app scrolls. This is kind of cool since scrolling smoothness feels right and is a sign of a good design.
Via iOS Dev Weekly.
Tag: performance
Simple iOS Performance Tips
A former ο£Ώ engineer gives us “a checklist of performance tips that would hopefully give you the biggest bang for your buck.”
I have noticed that there was a pattern of low-hanging fruits, where you could make 80% of the performance gains in 20% of the time.
π iOS Performance tips you probably didn’t know (from an ex-Apple engineer)
Cheat sheet:
UILabelcosts more than than you think- Always start with serial queues, and only use concurrent queues as a last resort
- Some system components will only free up memory when they receive a memory warning
- Avoid using
dispatch_semaphore_tto wait for asynchronous work - Donβt use
UIViewtags
Via iOS Dev Weekly.
Mental Break Town 