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Update 02.7.md #1165

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Apr 10, 2021
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Update 02.7.md #1165

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2 changes: 1 addition & 1 deletion zh-tw/02.7.md
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Expand Up @@ -165,7 +165,7 @@ func main() {
>另外記住一點的就是 channel 不像檔案之類別的，不需要經常去關閉，只有當你確實沒有任何傳送資料了，或者你想明確的結束 range 迴圈之類別的時候。

## Select
我們上面介紹的都是隻有一個 channel 的情況，那麼如果存在多個 channel 的時候，我們該如何操作呢，Go 裡面提供了一個關鍵字 `select`，透過 `select` 可以監聽 channel 上的資料流動。
我們上面介紹的都是只有一個 channel 的情況，那麼如果存在多個 channel 的時候，我們該如何操作呢，Go 裡面提供了一個關鍵字 `select`，透過 `select` 可以監聽 channel 上的資料流動。

`select` 預設是阻塞的，只有當監聽的 channel 中有傳送或接收可以進行時才會執行，當多個 channel 都準備好的時候，select 會隨機選擇其中一個執行。

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