Refactor TradingHours struct to be a slice instead of array of 7 elements

date_utils/date_utils.go

@@ -276,12 +276,12 @@ func formatTimestampsWithTimeZoneInSlice(fieldValue reflect.Value, location *tim
 
 // TradingHours represents an array of (StartTime,EndTime) pairs, one for each day of the week.
 // The array is 0 indexed, with 0 being Monday and 6 being Sunday.
-type TradingHours [7]struct {
+type TradingHours []struct {
 	StartTime string `json:"start_time"`
 	EndTime   string `json:"end_time"`
 }
 
-func (t *TradingHours) Validate() bool {
+func (t TradingHours) Validate() bool {
 	if t == nil {
 		return false
 	}
@@ -327,7 +327,7 @@ func (t *TradingHours) Validate() bool {
 	return true
 }
 
-func (t *TradingHours) String() string {
+func (t TradingHours) String() string {
 	var dayMap = map[int]string{
 		0: "Mon",
 		1: "Tue",