Initial commit

util/rand.go

@@ -0,0 +1,22 @@
+package util
+
+import (
+	"math/rand"
+)
+
+var (
+	runes        = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890")
+	runes_length = len(runes)
+)
+
+func NewRandId(n int) string {
+	data := make([]rune, n)
+	for i := range data {
+		data[i] = runes[rand.Intn(runes_length)]
+	}
+	return string(data)
+}
+
+func NewSessionId() string {
+	return NewRandId(24)
+}