get random 4 string
()
| 55 | |
| 56 | //get random 4 string |
| 57 | func RandomString4() string { |
| 58 | |
| 59 | //0 and o, 1 and l are not easy to distinguish |
| 60 | var letterRunes = []rune("abcdefghijkmnpqrstuvwxyz23456789") |
| 61 | |
| 62 | r := rand.New(rand.NewSource(time.Now().UnixNano())) |
| 63 | |
| 64 | b := make([]rune, 4) |
| 65 | for i := range b { |
| 66 | b[i] = letterRunes[r.Intn(len(letterRunes))] |
| 67 | } |
| 68 | |
| 69 | return string(b) |
| 70 | } |