A new programming language called Swift was announced at WWDC'14. Here's a source-to-source comparison of Swift and Scala using the examples given in "The Swift Programming Language" book published by Apple in the iTunes Store.

I suspect the two are related ;-) Syntacticly, it's fair to say that Swift is a dialect of Scala. Swift inherits from Scala most of the "banner" features listed by Apple: Type Inference, Closures, Tuples, Protocols, Extensions, Generics, Read-Eval-Print-Loop, etc.

Despite their syntactic similarity, Swift's runtime environment is quite distinct from Scala's, and is perhaps the most interesting aspect of the new language. Scala compiles to the JVM, uses garbage collection, and its object model transparently integrates with Java. Swift compiles to native code, uses automatic reference counting, and its object model transparently integrates with Objective-C. Thus, the similarity between the two languages does not extend much below the surface.

Den Shabalin provides another excellent point-by-point comparison.

p.s. Don't take this code too seriously! Most of it is rote, minimalistic translation of the Swift examples given by Apple. I give a handful of more idiomatic Scala translations. Feel free to submit a GitHub issue/pull request if you find anything unbearably crass.