flags_string_slice.go

// slice of strings as CLI argument 🐹
// https://pkg.go.dev/flag#Value
package main

import (
	"flag"
	"log"
)

type arrayFlags []string

func (i *arrayFlags) String() string {
	return "my string representation"
}

func (i *arrayFlags) Set(value string) error {
	*i = append(*i, value)
	return nil
}

var myFlags arrayFlags

func main() {
	flag.Var(&myFlags, "list1", "Some description for this param.")
	flag.Parse()
	
	for _, q := range myFlags {
		log.Println(q)
	}
}