Difficult performance diagnosis and lack of anti-pattern detection tools
6/10 MediumPerformance issues are hard to diagnose and address. Unnecessary copying, excessive metadata lookups with existentials/generics, and ARC traffic require specific compiler incantations to work around. No built-in tools exist to identify anti-patterns.
Collection History
Query: “What are the most common pain points with Swift for developers in 2025?”4/4/2026
Performance issues are sometimes a bit hard to diagnose and address (e.g. unnecessary copying, we can get tons of metadata lookups when using existensial/generics if not getting the incantations right, ARC traffic, etc) - and need workarounds that allow the compiler to specialize properly.
Created: 4/4/2026Updated: 4/4/2026