doc: add doc for RandUniqueIntSlice

random/random.go

@@ -115,7 +115,8 @@ func UUIdV4() (string, error) {
 	return fmt.Sprintf("%x-%x-%x-%x-%x", uuid[0:4], uuid[4:6], uuid[6:8], uuid[8:10], uuid[10:]), nil
 }
 
-// RandUniqueIntSlice generate a slice of random int of length n that do not repeat
+// RandUniqueIntSlice generate a slice of random int of length n that do not repeat.
+// Play: todo
 func RandUniqueIntSlice(n, min, max int) []int {
 	if min > max {
 		return []int{}

random/random_example_test.go

@@ -130,6 +130,7 @@ func ExampleRandUniqueIntSlice() {
 	if len(result) == 5 {
 		fmt.Println("ok")
 	}
+	fmt.Println(result)
 
 	// Output:
 	// ok