Hack is a programming language for HHVM that interoperates seamlessly with PHP. Hack reconciles the fast development cycle of PHP with the discipline provided by static typing, while adding many features commonly found in other modern programming languages.
This document will guide you through Facebook Platform integration for iOS. We will walk you through a tutorial to show the key steps to building a social iOS app. This will include showing you how to enable Single Sign-On. We will also cover additional topics around integrating with Facebook Platform.