In Go, you can write to a file using the built-in os package. Here's an example of how to create a file and write to it:
package main
import (
"fmt"
"os"
)
func main() {
file, err := os.Create("example.txt")
if err != nil {
fmt.Println(err)
return
}
defer file.Close()
_, err = file.WriteString("Hello, world!")
if err != nil {
fmt.Println(err)
return
}
}
In this example, we create a file named "example.txt" using the os.Create function. The if err != nil check ensures that the file was created successfully.
Next, we defer the closing of the file to ensure that it is properly closed once we've finished writing to it.
Finally, we use the file.WriteString function to write the string "Hello, world!" to the file. The _ variable acts as a placeholder for the number of bytes written, and we check for any errors with if err != nil.
Once you run this code, if there are no errors, you should see a new file in your current directory named "example.txt" with the contents "Hello, world!".