Codechange: replace x.size() == 0 with x.empty()

src/network/core/tcp_connect.cpp

@@ -203,7 +203,7 @@ void TCPConnecter::OnResolved(addrinfo *ai)
 	}
 
 	if (_debug_net_level >= 6) {
-		if (this->addresses.size() == 0) {
+		if (this->addresses.empty()) {
 			Debug(net, 6, "{} did not resolve", this->connection_string);
 		} else {
 			Debug(net, 6, "{} resolved in:", this->connection_string);

src/network/core/tcp_listen.h

@@ -142,7 +142,7 @@ public:
 	 */
 	static bool Listen(uint16_t port)
 	{
-		assert(sockets.size() == 0);
+		assert(sockets.empty());
 
 		NetworkAddressList addresses;
 		GetBindAddresses(&addresses, port);
@@ -151,7 +151,7 @@ public:
 			address.Listen(SOCK_STREAM, &sockets);
 		}
 
-		if (sockets.size() == 0) {
+		if (sockets.empty()) {
 			Debug(net, 0, "Could not start network: could not create listening socket");
 			ShowNetworkError(STR_NETWORK_ERROR_SERVER_START);
 			return false;

src/network/core/udp.cpp

@@ -73,7 +73,7 @@ void NetworkUDPSocketHandler::CloseSocket()
  */
 void NetworkUDPSocketHandler::SendPacket(Packet *p, NetworkAddress *recv, bool all, bool broadcast)
 {
-	if (this->sockets.size() == 0) this->Listen();
+	if (this->sockets.empty()) this->Listen();
 
 	for (auto &s : this->sockets) {
 		/* Make a local copy because if we resolve it we cannot

src/network/network.cpp

@@ -703,7 +703,7 @@ void GetBindAddresses(NetworkAddressList *addresses, uint16_t port)
 	}
 
 	/* No address, so bind to everything. */
-	if (addresses->size() == 0) {
+	if (addresses->empty()) {
 		addresses->emplace_back("", port);
 	}
 }

src/network/network_content_gui.cpp

@@ -899,7 +899,7 @@ public:
 			}
 		}
 
-		if (this->content.size() == 0) {
+		if (this->content.empty()) {
 			if (this->UpdateFilterState()) {
 				this->content.ForceRebuild();
 				this->InvalidateData();