Answer by Craig Conover for How can we check channel is subscribed or not in...
PubNub PresencePlease review the Presence Tutorial for Ruby SDK. You would use here_now API to find out who is subscribed to the channel.For your Ruby server, you could also use Presence Web Hooks to...
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I have subscribed channel during object create and unsubscribing it after destroy.But in some events subscribed channels showing blank array.So how can I check any channel whether it is blank or not?...
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