golang中迭代channel和array

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本文主要介绍如何在golang中迭代channel和array。

range循环切片

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for key, index := range []int{1, 2, 3} {
  fmt.Printf("key = %d, index = %d\n", key, index)
}

range循环channel

当channel关闭时自动退出循环

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for c := range ch1 {
  fmt.Printf("c: %v\n", c)
}

通道取值

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for {
  data1, ok := <-ch1
  if !ok {
    break
  }
  data2, ok := <-ch2
  if !ok {
    break
  }
  fmt.Printf("data1: %v, data2: %v\n", data1, data2)
}

select多路复用

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for {
  select {
    case data := <-ch1:
    {
      fmt.Printf("data: %v\n", data)
    }
    case <-ch2:
  default:
    time.Sleep(time.Second)
  }
}