Initial commit

app/service/main/antispam/util/rand.go

@@ -0,0 +1,19 @@
+package util
+
+import "math/rand"
+
+var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+// RandID .
+func RandID() int64 {
+	return rand.Int63()
+}
+
+// RandStr .
+func RandStr(size int) string {
+	b := make([]rune, size)
+	for i := range b {
+		b[i] = letterRunes[rand.Intn(len(letterRunes))]
+	}
+	return string(b)
+}