Cannot invoke 'map' with an argument list of type '([AnyObject],(_) -> _)'

Question

I write one method in swift 1 like this :

public var array: [JSON]? {
     get {
         if self.type == .Array {
             return map(self.object as! [AnyObject]){ JSON($0) }
         } else {
             return nil
         }
     }
}

when I install Xcode 7.2 (swift 2) this method give me error like this :

Cannot invoke 'map' with an argument list of type '([AnyObject],(_) -> _)'

now I want to know what is that problem?

Please look into the link stackoverflow.com/questions/32673694/… — Ramkrishna Sharma

Cristik Cristik · Accepted Answer · 2016-01-06T08:26:26

Don't use forced cast, and call map on the array, as the function was moved in Swift 2

return (self.object as? [AnyObject])?.map{ JSON($0) }

Cannot invoke 'map' with an argument list of type '([AnyObject],(_) -> _)'

1 Answers