SimpleQueue.go

recv := make(chan int)
send := make(chan int)

go func() {
  queue = make([]int, 0)
  done := false
  for !done {
    if len(queue) == 0 {
  
      select {
      case item, ok := <-recv:
        if ok {
          queue = append(queue, item)
        } else {
          done = true
        }
      }
  
    } else {
  
      select {
  
      case send <- queue[0]: // <-- can I conditionally exclude this case from selects?
        queue = queue[1:]
  
      case item, ok := <-recv:
        if ok {
          queue = append(queue, item)
        } else {
          done = true
        }
      }
    }
  }
}()