Help me to find Unicode codepoint in Go

How can I find unicode codepoints in Go?

This may help: utf8 package - unicode/utf8 - Go Packages

package main

import (
	"fmt"
	"unicode/utf8"
)

func main() {
	str := "Hello, 世界"

	for len(str) > 0 {
		r, size := utf8.DecodeLastRuneInString(str)
		fmt.Printf("%c %v\n", r, size)

		str = str[:len(str)-size]
	}
}

Great! thanks for your help