So, I just found out that closed channels always yield the zero value. That
means, a closed channel inside a select statement seems to always be
guaranteed to be executed.
Since closing an already closed channel creates a panic, does this mean
then I can do this to make sure that the channel is closed only once?
select {
case <- closedchan:
default:
close(closedchan)
}
Golang playground: https://play.golang.org/p/LSrTh0HC2K
It seems to work. Just want to confirm here before start doing this
everywhere in my code.
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