package flag
String defines a string flag with specified name(1st parameter), default value (2nd parameter), and usage string(3rd parameter). The return value is the address of a string variable that stores the value of the flag.
Golang flag.String() function usage example
package main
import (
"flag"
"fmt"
)
func main() {
verbose := flag.String("verbose", "on | off", "Turn verbose mode on or off.")
flag.Parse()
fmt.Println(flag.Lookup("verbose")) // print the Flag struct
fmt.Println(*verbose)
}
Output :
&{verbose Turn verbose mode on or off. on | off on | off}
on | off
Reference :
http://golang.org/pkg/flag/#String
