hsleedevelop

//#include <ifaddrs.h> in bridging-header first.

fileprivate func getIPAddress() -> String? {
        var address : [String]? = []
        
        // Get list of all interfaces on the local machine:
        var ifaddr : UnsafeMutablePointer<ifaddrs>?
        guard getifaddrs(&ifaddr) == 0 else { return nil}
        guard let firstAddr = ifaddr else { return nil}
        

hsleedevelop

//http://stackoverflow.com/questions/41940994/closure-cannot-implicitly-capture-a-mutating-self-paramter/41941810#41941810

private func capture(with block: @escaping () -> ()) { block() }

hsleedevelop

            let sdevices = devices.flatMap({ (device: Device) -> String in
                return "\(device.brand)-\(device.hostname)-\(device.ipAddress)-\(device.macAddress)\n"
            }).flatMap({$0}).joined()
            
            DispatchQueue.main.async {
                JDAlert(title: "Found \(devices.count) Device(s).", message: sdevices, preferredStyle: .alert)
                    .addAction(title: "OK", style: .default) { _ in }
                    .show()
            }