Functions are, in fact, just named closures. The following are at least conceptually equivalent:
let foo = { println("hello") }
func foo()->(){ println("hello") }
This gets a little more complicated in the case of using func to declare methods, as there's some interesting bits of sugar added regarding the automatic insertion of public named parameters, etc. func myMethod(foo:Int, bar:Int, baz:Int) becomes func myMethod(foo:Int, #bar:Int, #baz:Int), for example.
But it's still true that even methods are just a specific case of closures, and if it's true of closures, it's true of functions and methods as well.
