Golang : Random Rune generator
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
By Adam Ng
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