golang for select break小坑

package main

import "fmt"
import "log"

func main() {
      fmt.Println(test())
      
}

func test() bool {
      ch := make(chan int,30)
      for i := 0; i < 30; i++ {
            ch <- i
      }
     
      for {
            select {
                  case d :=<- ch:	
                        log.Printf("Executor received: %v", d)
                  default:
                        break 
            }
      }
      return true
}

该代码不能跳出for循环，不能打印true，所以要再for循环外加代码块，在select里面 break代码块就可以跳出for循环了loop:

      loop:

            for {

                  select {

                        case d :=<- ch:   // 取数据

                              log.Printf("Executor received: %v", d)

                        default:

                              close(ch)

                              break loop

                  }

            }

      return true