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                ### 關閉channel * channel不想文件一樣需要經常去關閉,只有當你確實沒有任何發送數據了,或者你想顯示的結束range循環之類的, 才去關閉channel * 關閉channel后,無法向channel再發送數據(引發panic錯誤后導致接收立即返回零值) * 關閉channel后,可以繼續向channel接收數據 * 對于nil channel,無論收發都會被阻塞 ~~~ ch := make(chan int) //創建一個有緩沖channel go func() { for i := 0; i < 5; i++ { ch <- i } close(ch) //不需要再寫數據時,關閉channel }() //for { // //如果OK為true,說明管道沒有關閉 // if value, ok := <-ch; ok == true { // fmt.Println(value) // } else { // break // } //} for value := range ch { //通過range遍歷channel fmt.Println(value) } ~~~ ~~~ 0 1 2 3 4 ~~~
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