How to write an array of bytes to a file in golang?

Question

go

Tried to do so

permissions := 0644 // or whatever you need
byteArray := []byte("to be written to a file\n")
err := ioutil.WriteFile("file.txt", byteArray, permissions)
if err != nil { 
    // handle error
}

mistake:

./main.go:192:26: cannot use permissions (type int) as type os.FileMode in argument to ioutil.WriteFile

Answer 1

You need to cast permissions to type os.FileMode

permissions := 0644 // or whatever you need
byteArray := []byte("to be written to a file\n")
err := ioutil.WriteFile("file.txt", byteArray, os.FileMode(permissions))