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Everyday ergonomics
- No longer need parens in
(some Rocket)?
- Can call async inside defer
- Can use weak let in sendable
- Can set
~Sendable explicity
- Structs with mix of property scopes will have multiple initializers for different scopes
- Simplify availability since version numbers are aligned
@available(anyAppleOS 27, *)
@diagnose to hide swift warnings, or enable others, or upgrade to errors- Can use double colon as a module selector, which can work around tricky import issues with conflicting modules
- Should not use these generally, only when needed. Dont design apis to require them.
Libraries
- Standard library
- TaskCancellationShield, inside this isCancelled always returns false
- Dict.mapKeyedValues
- New filepath struct
- Testing
- Set severity level
- Cancel tests dynamically
- Cli flags: maximum reps, repeat until fail
- Better integration between swift testing and xctest
- Subprocess: better output stream handling
- Foundation
- Progress manager
- Moved more things to swift
Fullstack swift
- C Interopability extended to call swift from c code
- Can now bridge swift span to cpp20 span
- Can call async and throwing swift functions from java
- Easier to install toolchains from vscode extension
- Better bridging between javascript and swift-wasm
- Existential types added to embedded swift, as well as untyped throws
@inline(always)@specialized(where Values == [SomeType] to hint how generics should be expanded, in a library context- Adding Borrow for memory shaing
- While borrowed, imutable on both sides
- A mutate variation where the borrower can modify, and the owner cannot read
- This will be used in for loops over Iterable (not over Sequence)
- Can use
borrow/mutate in place of get/set for computed properties
UniqueBox is a safe alternative to UnsafeMutablePointer. Also have UniqueArray- Ref and MutableRef types
Open source
- Swift build is now the default for SPM