Rewrite in Swift

[manicmaniac]

Honestly I'm wondering if rewriting in Swift is good idea or not.

Pros:

• Looks modern
• Source code will be shorter
• Strict typing can reduce the test cases

Cons:

• Swift is still less stable than Objective-C so the future maintenance cost would be more expensive
• Swift cannot use id type without casting so headers in Xcode private frameworks must be rewritten manually

Things not important:

• I think performance difference between Swift and Objective-C is not meaningful because core features of this program depends on Xcode frameworks and they are written in Objective-C
• Distributing with Swift Package Manager is not so attracting to me because it supports Objective-C program