main_test.go

package main

import (
	"fmt"

	"github.com/nkall/compactnumber"
	"golang.org/x/text/language"
)

type compact int

func (v compact) String() string {
	formatter := compactnumber.NewFormatter(language.Japanese.String(), compactnumber.Short)
	out, _ := formatter.Format(int(v))
	return out
}

func ExampleF() {
	fmt.Printf("私の戦闘力は%sです", compact(530000))
	// Output: 私の戦闘力は53万です
}