Swift opens review of Cell and Volatile interior mutability types
SE-0556 would add Cell, ConstCell, and Volatile primitives, with early debate on naming, library placement, and safety under concurrency and C interop.
By rvalue#swift-evolution
Swift reviews SE-0554 deployment-target conditionals
A proposed #if on minimum OS versions would help shared libraries pick types at compile time, while core engineers call the need a deeper language gap.
By rvalueSwift reviews macros that can grant self access in property initializers
SE-0539 would let accessor macros promise the compiler that an initializer expression will run only after self is fully available.
By rvalueSwift pitch allows memberwise inits in same-file extensions
The change targets a blocker for public initializers on macro-generated structs without waiting on new synthesis syntax.
By rvalue