Completion Handler in Swift

Try

directions.calculateDirectionsWithCompletionHandler ({
(response: MKDirectionsResponse?, error: NSError?) in 
        println(response?.description)
        println(error?.description)
    })

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This is the general way a block/closure looks like in Swift.

if you don't need to use the parameters you can do it like this

directions.calculateDirectionsWithCompletionHandler ({
(_) in 
  // your code here
    })

Tags:

Ios

Swift

Routes

Mkmapview

Mapkit

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