kotlin hepler function for RemoteCallbackList

RemoteCallbackList.kt

inline fun <E : IInterface?> RemoteCallbackList<E>.forEach(f: (E) -> Unit) {
    var i = beginBroadcast()
    while (i > 0) {
        i--
        try {
            f(getBroadcastItem(i))
        } catch (e: RemoteException) {
            // The RemoteCallbackList will take care of removing
            // the dead object for us.
        }
    }
    finishBroadcast()
}

inline fun <E : IInterface?, R> RemoteCallbackList<E>.map(f: (E) -> R): List<R> {
    val ret = mutableListOf<R>()
    mapTo(ret) { f(it) }
    return ret
}

inline fun <E : IInterface?, R, C : MutableCollection<R>> RemoteCallbackList<E>.mapTo(c: C, f: (E) -> R) {
    forEach {
        c.add(f(it))
    }
}