I was working on a side project yesterday, a side project which I decided to develop using Swift. My day job mostly consists of Objective-C (which I still love) but all the hip kids are doing Swift and it doesn't hurt to keep along with the latest trend, right? And learning is fun.
So I was coding away, and I had this component which needed to notify several other components of certain events that happened. In practice this meant that I needed a sort of multicast delegate. Now, I could have solved this the old Cocoa way by using notifications, but I try to stay away from them unless it really makes sense. The contract they offer is pretty loose (which can be handy too), but I wanted to try something more set-in-stone right now.