use reflect in the twmodel.isZero function

tw/twmodel/helpers.go

@@ -1,40 +1,9 @@
 package twmodel
 
 import (
-	"time"
+	"reflect"
 )
 
 func isZero(v interface{}) bool {
-	switch c := v.(type) {
+	return reflect.ValueOf(v).IsZero()
-	case string:
-		return c == ""
-	case *string,
-		[]string,
-		[]VersionCode,
-		[]ServerStatus,
-		*int:
-		return c == nil
-	case int:
-		return c == 0
-	case []int:
-		return c == nil
-	case float64:
-		return c == 0
-	case *float64:
-		return c == nil
-	case float32:
-		return c == 0
-	case *float32:
-		return c == nil
-	case bool:
-		return !c
-	case *bool:
-		return c == nil
-	case time.Time:
-		return c.IsZero()
-	case *time.Time:
-		return c == nil
-	default:
-		return false
-	}
 }