How can i emit to arrays of connected socket-ids ?

[parseshyam]

Let's say I have connected socket-id stored in DB's, and i want to emit to multiple socket-id's based on some criteria or conditions
instead of looping over and sending is there any other way to send array of socket-id's or something ?
Like ....emit ( [......socket-id's array.........] ,"data" )

[darrachequesne]

There is no built-in way to do that right now. You should be able to use io.to() in a loop

ids.forEach(id => io.to(id));
io.emit("hello");

The question has already been asked on the Slack channel, so it may make sense to add io.to(<array>).emit(...) directly.