About Swift
Swift is a new programming language for iOS and OS X apps that builds on the
best of C and Objective-C, without the constraints of C compatibility. Swift
adopts safe programming patterns and adds modern features to make
programming easier, more flexible, and more fun. Swift’s clean slate, backed by
the mature and much-loved Cocoa and Cocoa Touch frameworks, is an
opportunity to reimagine how software development works.
Swift has been years in the making. Apple laid the foundation for Swift by
advancing our existing compiler, debugger, and framework infrastructure. We
simplified memory management with Automatic Reference Counting (ARC). Our
framework stack, built on the solid base of Foundation and Cocoa, has been
modernized and standardized throughout. Objective-C itself has evolved to
support blocks, collection literals, and modules, enabling framework adoption of
modern language technologies without disruption. Thanks to this groundwork,
we can now introduce a new language for the future of Apple software
development.
Swift feels familiar to Objective-C developers. It adopts the readability of
Objective-C’s named parameters and the power of Objective-C’s dynamic object
model. It provides seamless access to existing Cocoa frameworks and mix-and-
match interoperability with Objective-C code. Building from this common
ground, Swift introduces many new features and unifies the procedural and
object-oriented portions of the language.
Swift is friendly to new programmers. It is the first industrial-quality systems
programming language that is as expressive and enjoyable as a scripting
language. It supports playgrounds, an innovative feature that allows
programmers to experiment with Swift code and see the results immediately,
without the overhead of building and running an app.
Swift combines the best in modern language thinking with wisdom from the
wider Apple engineering culture. The compiler is optimized for performance,
and the language is optimized for development, without compromising on
either. It’s designed to scale from “hello, world” to an entire operating system.
All this makes Swift a sound future investment for developers and for Apple.
Swift is a fantastic way to write iOS and OS X apps, and will continue to evolve
with new features and capabilities. Our goals for Swift are ambitious. We can’t
wait to see what you create with it.
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2014-06-03
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