From c885e3f5fa4f92bc783653beffb9943645d06352 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Tue, 20 Jun 2023 14:48:51 +0300
Subject: [PATCH] Add MessageViewer.is_empty().

---
 td/telegram/MessageViewer.cpp | 2 +-
 td/telegram/MessageViewer.h   | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/td/telegram/MessageViewer.cpp b/td/telegram/MessageViewer.cpp
index 74ff5f29d..c0e234a49 100644
--- a/td/telegram/MessageViewer.cpp
+++ b/td/telegram/MessageViewer.cpp
@@ -54,7 +54,7 @@ MessageViewers::MessageViewers(vector<telegram_api::object_ptr<telegram_api::rea
 
 MessageViewers MessageViewers::get_sublist(const MessageViewer &offset, int32 limit) const {
   MessageViewers result{vector<telegram_api::object_ptr<telegram_api::storyView>>()};
-  bool found = offset == MessageViewer(UserId(), 0);
+  bool found = offset.is_empty();
   for (auto &message_viewer : message_viewers_) {
     if (found) {
       if (limit-- <= 0) {
diff --git a/td/telegram/MessageViewer.h b/td/telegram/MessageViewer.h
index 06a39c57f..9d4507c9d 100644
--- a/td/telegram/MessageViewer.h
+++ b/td/telegram/MessageViewer.h
@@ -35,6 +35,10 @@ class MessageViewer {
     return user_id_;
   }
 
+  bool is_empty() const {
+    return user_id_ == UserId() && date_ == 0;
+  }
+
   td_api::object_ptr<td_api::messageViewer> get_message_viewer_object(ContactsManager *contacts_manager) const;
 };