gistfile1.swift

        let fun: (() -> Bool)? = UIAccessibilityIsReduceMotionEnabled
        
        switch fun {
        case .Some(let x):
            println("\(x)")
            x()   // gets here and dies on ios7
        default:
            println("gronk")
        }


Prints out:

(Function)
dyld: lazy symbol binding failed: Symbol not found: _UIAccessibilityIsReduceMotionEnabled

(and then dies horrible nasty death)