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Autorelease tidbits:

RunLoops wrap your code in autoreleasepool {} before calling it; so does Swift Concurrency

DispatchQueues don't, by default! Configure them with .workItem autorelease frequency to fix this

It's much less overhead than you'd expect from my description

swiftc can autorelease objects when returning them from @objc methods

Neither ObjC nor Swift ARC will autorelease things other than that

Use "Allocations" in Instruments to see where adding a pool would help

#swiftlang