Callback for kvWatcher

[Kazmirchuk]

Can I use a callback to watch for KV updates? Just like a normal NATS subscription.

Looking at the docs, it seems like currently my only option is to create a separate thread and call kvWatcher_Next in a loop, which is far from optimal =\

[kozlovic]

No, there is no callback for a KV watcher. You have indeed to call Next in a loop. One could imagine a new kvWatchOptions that would be a callback that is invoked with each new entry. But note that even the Go client returns an object on which the user can call Updates() which is a Go channel to receive those updates. So there is no such callback in the Go client either.