Xcode 9.3 - NSPredicate Bool crash

Question

After the Xcode 9.3 update, I\'ve noticed that if you want to have Predicate like this:

let predicate = NSPredicate(format: \"preferred = %@\", true as CVarArg)
         


        

Answer 1

// Solution 3 [ Apple Documentation ]

let predicate = NSPredicate(format: "preferred == TRUE")

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The exception occurs because true is not an object (%@). You need the %d placeholder

let predicate = NSPredicate(format: "preferred = %d", true)