gistify226870.m

/**
* Internal method that sends updates to all of the device's subscribers, allowing them to act on the new information.
* Should be called whenever the device's state has changed or when the device has received an update.
*/
- (void)updateAllSubscribers
{
    // Use a copy to avoid mutation while enumerating. This makes it possible to miss an update, so fix that at some
    // point.
    NSMutableArray * tempCopy = [self.deviceSubscribers copy];
    for(id<RACSubscriber> subscriber in tempCopy){
        [subscriber sendNext:self];
    }
}