I ran into a road block trying to figure out how to deal with selectors in Swift today and finally figured out how to get them to work.
Hopefully this helps some of you out there. If there are any other ways to do this or more efficient ways, please let me know.
[[UIButton alloc] initWithTitle: "Some Title" style: UIBarButtonItemStyle.Done target: self action: @selector(someMethod)]
UIBarButtonItem( title: "Some Title", style: UIBarButtonItemStyle.Done, target: self, action: "someMethod" )