Writing to a file

Generally speaking, you can use the functionality of the io.Writer interface for writing data to files on a disk. Nevertheless, the Go code of save.go will show you five ways to write data to a file. The save.go program will be presented in six parts.

The first part of save.go is as follows:

package main 
 
import ( 
    "bufio" 
    "fmt" 
    "io" 
    "io/ioutil" 
    "os" 
) 

The second code portion of save.go is shown in the following Go code:

func main() { 
    s := []byte("Data to write\n") 
 
    f1, err := os.Create("f1.txt") 
    if err != nil { 
        fmt.Println("Cannot create file", err) 
        return 
    } 
    defer f1.Close() 
    fmt.Fprintf(f1, string(s)) 

Notice that the s byte slice will be used in every line that involves writing presented in this Go program...