Hi, anyone is using the `select` expression? If ye...

# coroutines

[louiscad]

Hi, anyone is using the select expression? If yes, for what use cases?

[deviant]

i use it when need a timeout on stream

val hr = select {
                heartRateValueChannel.onReceive { it }
                onTimeout(10, TimeUnit.SECONDS, { -1 })
            }

[minivac]

you should check go (golang) select samples for channels, they have very good use cases for a select

[minivac]

timeout is the most common

[louiscad]

For timeout, I personally use withTimeout or withTimeoutOrNull

[bj0]

I use it for non-timeout purposes...

[louiscad]

@bj0 Would you tell me your use case?

[bj0]

hmm, the simplest one is I have a channel providing Status updates from a connection object, but I can also push my own custom Status objects. I use an actor looping on select to combine those two sources into a single Status channel

[bj0]

the other use case is I have a protocol that encodes/decodes data. Instead of dealing with connections directly it has an in and out channels, and I select on these channels because the connection can only deal with one command/response at a time