"Swift 6.3 introduces two new attributes to enhance interoperability with C, allowing Swift functions annotated with @c to generate corresponding declarations in C/C++ headers for easier calls."
"Module selectors in Swift 6.3 enable developers to disambiguate function calls when the same symbol exists in different modules, simplifying the process of referencing the intended implementation."
"The new weak let modifier allows capturing non-reference, immutable symbols inside closures in a concurrency-safe manner, addressing limitations of previous versions."
"Swift 6.3 stabilizes the Swift SDK for Android, previously in preview, facilitating the porting of Swift packages to the Android platform."
Swift 6.3 officially supports Android, enhancing cross-platform capabilities. It introduces the @c attribute for improved C interoperability, allowing Swift functions to be called from C/C++. Module selectors disambiguate function calls from different modules. The new weak let modifier captures immutable symbols in closures safely. Additional features include finer control over compiler optimizations with @specialize and @inline(always). The Swift SDK for Android is now stabilized, aiding developers in porting Swift packages to Android.
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