I have been writing Swift for 6 months now. Almost every single day. I will be shipping an App to the App Store this month written in Swift. The language is fantastic and the future of what languages should look like Swift.
However, I do not do billable consulting work in Swift. I am twice as slow writing Swift than I am writing Objective-C. The toolchain is very brittle. The debugger is near unusable. The instruction pointer bounces all over the source file while debugging. SourceKit crashes all of the time. Multiple times an hour. And build times are about twice as slow as Objective-C builds.
Swift is fine for personal projects or small libraries. I'm not going to bill hours in Swift until another major release.
However, I do not do billable consulting work in Swift. I am twice as slow writing Swift than I am writing Objective-C. The toolchain is very brittle. The debugger is near unusable. The instruction pointer bounces all over the source file while debugging. SourceKit crashes all of the time. Multiple times an hour. And build times are about twice as slow as Objective-C builds.
Swift is fine for personal projects or small libraries. I'm not going to bill hours in Swift until another major release.
Btw, I send a weekly Swift newsletter: http://www.swiftnews.co