標籤

continue 以及 break 都可以選擇性地接收一個迴圈標籤,用來跳出巢狀迴圈中的某一層:

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Speaker Notes

  • 請注意,loop 是唯一會傳回重要值的迴圈結構。這是因為系統保證至少會輸入一次此迴圈結構,這一點不同於 whilefor 迴圈。