Let's say I want to split a string by an empty space. This code snippet works fine in Swift 1.x. It does not work in Swift 2 in Xcode 7 Beta 1. var str = "Hello Bob" var foo = split(str) {$0 == " "} I get the following compiler error: Cannot invoke 'split' with an argument list of type '(String, (_) -> _) Anyone know how to call this correctly? Updated: Added a note that this was for the Xcode 7 b