fizzbuzz for golang

fizzbuzz.go

package main

import "fmt"

func main() {
  for i := 1; i < 100; i++ {
    fmt.Println(fizzbuzz(i))
  }
}

func fizzbuzz(i int) string {
  is_fizz := func(i int) bool {
    return i % 3 == 0
  }
  is_buzz := func(i int) bool {
    return i % 5 == 0
  }

  var res, fizz, buzz string = "", "FIZZ", "BUZZ"

  if is_fizz(i) {
    res += fizz
  }
  if is_buzz(i) {
    res += buzz
  }
  if (res == "") {
    res = fmt.Sprint(i)
  }
  return res
}