mapmain.go

func main() {
  done := make(chan struct{})
  defer close(done)
  
  // Generates a channel sending integers
  // From 0 to 9
  range10 := rangeChannel(done, 10)
  
  multiplierBy10 := func(x int) int {
    return x * 10
  }
  for num := range Map(done, range10, multiplierBy10) {
      fmt.Println(num)
  }
}