The source code to reset the buffer writer is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.
// Golang program to reset the buffer writer
package main
import "fmt"
import "os"
import "bufio"
func main() {
filePtr, err := os.OpenFile("Demo.txt", os.O_WRONLY, 0666)
if err != nil {
fmt.Println(err)
}
//Create a buffer writter using file pointer.
bufferedWriter := bufio.NewWriter(filePtr)
len, err := bufferedWriter.WriteString("Hello World\n")
if err != nil {
fmt.Println(err)
}
fmt.Printf("%d bytes written into file\n", len)
AvailableBuffer := bufferedWriter.Available()
if err != nil {
fmt.Println(err)
}
fmt.Printf("Available buffer size: %d\n", AvailableBuffer)
bufferedWriter.Flush()
//Reset buffer writer and make available.
bufferedWriter.Reset(bufferedWriter)
AvailableBuffer = bufferedWriter.Available()
if err != nil {
fmt.Println(err)
}
fmt.Printf("Available buffer size: %d\n", AvailableBuffer)
filePtr.Close()
}
Output:
12 bytes written into file
Available buffer size: 4084
Available buffer size: 4096
Explanation:
In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt, os packages then we can use a function related to the fmt and os package.
Here, we also imported the bufio package to use buffer writer to write data into a file.
In the main() function, we opened the "Demo.txt" file and then created a buffer-writer using bufio.NewWriter() function. Then we got the available buffer size using the Available() function. After that, we reset the buffer writer. Then we printed a new available size on the console screen.
Program/Source Code:
The source code to reset the buffer writer is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.
Output:
Explanation:
In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt, os packages then we can use a function related to the fmt and os package.
Here, we also imported the bufio package to use buffer writer to write data into a file.
In the main() function, we opened the "Demo.txt" file and then created a buffer-writer using bufio.NewWriter() function. Then we got the available buffer size using the Available() function. After that, we reset the buffer writer. Then we printed a new available size on the console screen.
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