DispatchQueue

  • http://stackoverflow.com/a/40997652/2984775 Method that does something a background thread, then calls a completion after a delay

    Declaration

    Swift

    static func background(delay: Double = 0.0, background: (()->Void)? = nil, completion: (() -> Void)? = nil)

    Parameters

    delay

    Double describing the duration to wait until calling the completion
    background

    Closure describing what to run on the background thread
    completion

    Closure called when the operation on the background thread finished