EugW

        registerReceiver(object : BroadcastReceiver() {
            override fun onReceive(context: Context, intent: Intent) {
                if ((intent.extras["networkInfo"] as NetworkInfo).state != NetworkInfo.State.CONNECTED) {
                    Toast.makeText(context, R.string.networkErr, Toast.LENGTH_LONG).show()
                    unregisterReceiver(this)
                    finish()
                    return
                }
            }
        }, IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION))

EugW

class SimpleMap<in K, V> {

    private var keys =  ArrayList<K>()
    private var values = ArrayList<V>()

    operator fun get(key: K): V {
        return values[keys.indexOf(key)]
    }

    operator fun set(key: K, value: V) {