What is Swift?
Writing code is interactive and fun, the syntax is concise yet expressive, and apps run lightning-fast. Swift is ready for your next iOS and OS X project — or for addition into your current app — because Swift code works side-by-side with Objective-C.
Swift is a tool in the Languages category of a tech stack.
Why developers like Swift
Ios
Elegant
Not Objective-C
Backed by apple
Type inference
Generics
Playgrounds
Semicolon free
OSX