Another use case is wait groups with Max number of goroutines allowed:
ch:= make(chan bool, 10)
func waiter() {
ch <-true
go worker()
// when empty, all jobs are finished
waitempty(ch)
}
func worker() {
// do work
Select {
ch <- true:
go worker() // try to handover some jobs
default:
// max goroutine limit
// do them yourself
}
// do remaining jobs
// make way
<- ch
return
}
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