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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ``` package main import ( "os" "fmt" "log" ) func main() { file, _ := os.Open("test.txt") defer file.Close() // 偏離位置,可以是正數也可以是負數 var offset int64 = 5 // 用來計算offset的初始位置 // 0 = 文件開始位置 // 1 = 當前位置 // 2 = 文件結尾處 var whence int = 0 newPosition, err := file.Seek(offset, whence) if err != nil { log.Fatal(err) } fmt.Println("Just moved to 5:", newPosition) // 從當前位置回退兩個字節 newPosition, err = file.Seek(-2, 1) if err != nil { log.Fatal(err) } fmt.Println("Just moved back two:", newPosition) // 使用下面的技巧得到當前的位置 currentPosition, err := file.Seek(0, 1) fmt.Println("Current position:", currentPosition) // 轉到文件開始處 newPosition, err = file.Seek(0, 0) if err != nil { log.Fatal(err) } fmt.Println("Position after seeking 0,0:", newPosition) } ```
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                              哎呀哎呀视频在线观看