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| package random | |
| import ( | |
| "math/rand" | |
| "time" | |
| "github.com/google/uuid" | |
| ) | |
| var Rand *rand.Rand | |
| const letterBytes = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" | |
| func String(n int) string { | |
| b := make([]byte, n) | |
| for i := range b { | |
| b[i] = letterBytes[Rand.Intn(len(letterBytes))] | |
| } | |
| return string(b) | |
| } | |
| func Token() string { | |
| return "alist-" + uuid.NewString() + String(64) | |
| } | |
| func RangeInt64(left, right int64) int64 { | |
| return rand.Int63n(left+right) - left | |
| } | |
| func init() { | |
| s := rand.NewSource(time.Now().UnixNano()) | |
| Rand = rand.New(s) | |
| } | |