Golang : Random Rune generator



Tags : golang random rune string

Just a quick tutorial on how to generate random runes and add on to previous tutorial on how to generate random string. Useful for generating non-English characters.

Here you go!

 package main

 import (
  "fmt"
  "math/rand"
  "time"
 )

 var runes = []rune("一二三四五六七八九十1234567890") 

 func generateRandomRune(n int) string {
  randRune := make([]rune, n)

  for i := range randRune {
 // without this, the final value will be same all the time.
 rand.Seed(time.Now().UnixNano()) 

 randRune[i] = runes[rand.Intn(len(runes))]
  }
  return string(randRune)
 }

 func main() {
  fmt.Println(generateRandomRune(5))
 }

Sample output :

六3十01

p/s : play.golang.org will always show the same random value. You have to test it out on your own machine.

  See also : Golang : Count number of runes in string



Tags : golang random rune string

By Adam Ng

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