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- DocC and swift website open sourced
- New c++ interop workgroup to explore integration
Swift packages
- TOFU, trust on first use, package fingerprinting
- Command plugins, ie formatters and linters
- DocC gets objc and c support
- Build tool plugins too, can add additional steps during build
- Build times faster
- Swift directly in xcode build tools instead of a separate executable
- Faster type checking, with new implementations
- Runtime improvements
Concurrency updates
- Can back deploy async await to older OSs
- Data race avoidance
- Moving to thread safety by default for swift 6
actor and distributed actor. See additional session about this
- Async algorithms
- Open source package for things using AsyncSequence
- zip, merge, debounce, chunked
- Actor prioritization, priority-inversion avoidance
- New swift actor instrument, to visualize swift tasks
Expressive swift
if let thing = thing becomes if let thing. works for guard as well- .compactMap, map but filtering nil
- New rules for pointer conversions when calling c functions
- String processing
- Less trimming/splitting etc, more regex
- Literals are declared between forward slashes
- Or, can create regexes with a swiftUI style syntax library.
- Can turn these in to nestable components, or recursive
- Take care of types and matching, ie for dates
- Uses a new regex parser in swift
- Generic code clarity
- Fixes for tricky errors I’ve never ran into
- Adds the
any keyword to distinguish box types of protocol conformance from generic types
- But generics are better, so use them when possible
- new
some keyword allows removing some boilerplate with generics