struct{}{}

utils/utils.go

@@ -35,10 +35,10 @@ var (
 	letterBytes    = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 	letterBytesNum = "0123456789"
 
-	flowUnitMap = map[string]string{
-		"KB": "KB",
-		"MB": "MB",
-		"GB": "GB",
+	flowUnitMap = map[string]struct{}{
+		"KB": struct{}{},
+		"MB": struct{}{},
+		"GB": struct{}{},
 	}
 )
 
@@ -216,8 +216,8 @@ func GetNextTimeFromList(now time.Time, timeList []string) (snapshotAt time.Time
 }
 
 func SplitFlowAndUnit(flowStr string) (flow float64, unit string) {
-	for _, v := range flowUnitMap {
-		if strings.Contains(flowStr, v) {
+	for k, _ := range flowUnitMap {
+		if strings.Contains(flowStr, k) {
 			return utils.Str2Float64WithDefault(flowStr[:len(flowStr)-2], 0), flowStr[len(flowStr)-2:]
 		}
 	}