Functions which extend the capabilities of the flag package.

This package includes:

• flagx.ArgsFromEnv allows flags to be passed from the command-line or as an environment variable.

• flagx.FileBytes is a new flag type. It automatically reads the content of the given file as a []byte, handling any error during flag parsing and simplifying application logic.

• flagx.StringArray is a new flag type that handles appending to []string

Usage of any of the above is like:

package main

import (
	"flag"
	"fmt"

	"github.com/m-lab/go/flagx"
)

var (
	flagArray flagx.StringArray
)

func main() {
	flag.Var(&flagArray, "array", "append to string array")
	flag.Parse()
	fmt.Printf("%+v\n", flagArray)
	// your code here
}