In Go, you can use the flag package to define and parse boolean command-line flags. Here's an example of how you can do this:
package main
import (
"flag"
"fmt"
)
func main() {
// Define a boolean flag using the flag.Bool function
// The first argument is the flag name, and the second argument is the default value
boolFlag := flag.Bool("flagname", false, "Description of the flag")
// Parse the command-line arguments to populate flag variables
flag.Parse()
// Access the value of the flag using the pointer
if *boolFlag {
fmt.Println("Flag is set to true")
} else {
fmt.Println("Flag is set to false")
}
}
In this example, the flag.Bool function is used to define a boolean flag named flagname with a default value of false and a description. The flag.Parse() function is called to parse the command-line arguments and populate the flag variable. The value of the flag can be accessed using the pointer *boolFlag. If the flag is set to true, it prints "Flag is set to true", otherwise it prints "Flag is set to false".
To use this program, you can run it from the command line with the flag -flagname=true or -flagname=false. If no flag is provided, it will use the default value of false.