class Array
class Redis
class Redis::Client
class Redis::Client::ThreadSafe
class Redis::CommandOptions
class Redis::Distributed
class Redis::Distributed::CannotDistribute
class Redis::HashRing
class Redis::Pipeline
class Redis::ProtocolError
class Redis::SubscribedClient
class Redis::Subscription
redis
2.0.0.rc3
# connected?
def connected? !! @sock end