Fun with emoji string lengths

emoji_fun.go

package main

import (
	"fmt"
	
	"unicode/utf8"
	"github.com/rivo/uniseg"
)

func main() {
	fmt.Println("Hello, playground")
	
	a := "cat"
	b := "🍿☕️🍕"
	
	fmt.Println(len(a))
	fmt.Println(utf8.RuneCountInString(a))
	fmt.Println(uniseg.GraphemeClusterCount(b))
	fmt.Println()
	fmt.Println(len(b))
	fmt.Println(len([]rune(b)))
	fmt.Println(utf8.RuneCountInString(b))
	fmt.Println(uniseg.GraphemeClusterCount(b))
}

Output:

Hello, playground
3
3
3

14
4
4
3