Calling back and forth between Swift, Objective-C, C, C++, Rust, Go, ...?

[cocheret]

Is there any training or books on Kodeco (or elsewhere) that do a good job explaining the ins and outs of cross-language concerns? Occasionally Swift code needs to deal with odd Objective-C data structures or I need to use a C or C++ framework. Or even worse, I have to provide a program in Go or Rust and want to use things like SwiftUI and Metal. There are open source projects out there but I frequently hit bugs and just want to control my own destiny and really have a solid understanding of all of the concerns.

Any pointers would be greatly appreciated.

~chuck

[robertomachorro]

Objective-C and Swift together are well documented and supported, you can even call Swift from Objective-C:

https://developer.apple.com/documentation/swift/importing-objective-c-into-swift

https://developer.apple.com/documentation/swift/importing-swift-into-objective-c

It gets tricky when handling pointers in Swift (unsafe types), but in general bridging headers will be your friends and everything works out of the box. (Edit Added) C and C++ are supported by Xcode and while I have only done C, I understand that C++ and Objective-C++ are also supported using the same techniques.

As for other languages, JavaScript and Kotlin Native may get your partly there, but there isn’t much.