iOS delegates and protocols for passing data in swift

[blue-lion]

Hi, I'm trying to get to grips with delegates in swift (specifically for passing data between view controllers).
I feel I've almost grasped it , but need to have my own program to try to understand further and mess about with.
With this mind i have reproduced a simple example from youtube, but (you've guessed it) mine doesn't quite work fully.
Does any one know of a good example on youtube ,or a project file i can get hold of?

I'm using the latest version of swift

 

[Dookieman]

http://useyourloaf.com/blog/quick-guide-to-swift-delegates/

This is a break down of using delegates.