Newb stuck on unwrapping error

📚 Official Books iOS Apprentice
1

Hi there- I’m literally on day 2 of this and new to coding so I’m sure this is obvious but I’m stuck: I’m getting an unwrap error where a value is coming up nil. I even tried copying in the source code from the tutorial verbatim, though, and that seemed to give me the same error. The simulator says build successful for a hot second but then crashes before load with the following error. What am I missing here?

Thanks
Tom

Screen Shot 2016-04-11 at 4.10.18 PM.png1144×741 139 KB

2

Heyyyy I think I figured it out myself. Since it didn’t seem to be code within the View Controller I checked out the difference in the connections in my storyboard and apparently I was missing the referencing outlet between the slider and the View Controller.

3

Yep, that’s exactly what the error message is telling you. It would be nicer if it said “you probably forgot to connect the outlet”, but Xcode isn’t that smart. :wink: