The use of bind in Ticker.h is prone to type inference failure (esp8266#6129)

* std::bind has issues with type inference, use lambdas whereever possible.

* Fix indentation.

* More descriptive placeholder name in lambda expression

* Use formal argument names for remaining currying placeholders

Author: dok-net

libraries/ESP8266mDNS/src/LEAmDNS.cpp

@@ -97,14 +97,14 @@ bool MDNSResponder::begin(const char* p_pcHostname) {
             m_GotIPHandler = WiFi.onStationModeGotIP([this](const WiFiEventStationModeGotIP& pEvent) {
                 (void) pEvent;
                 // Ensure that _restart() runs in USER context
-                schedule_function(std::bind(&MDNSResponder::_restart, this));
+                schedule_function([this]() { MDNSResponder::_restart(); });
             });
 
             m_DisconnectedHandler = WiFi.onStationModeDisconnected([this](const WiFiEventStationModeDisconnected& pEvent) {
                 (void) pEvent;
                 // Ensure that _restart() runs in USER context
-                schedule_function(std::bind(&MDNSResponder::_restart, this));
-            });
+                schedule_function([this]() { MDNSResponder::_restart(); });
+                });
 
             bResult = _restart();
         }
@@ -137,10 +137,10 @@ bool MDNSResponder::begin(const char* p_pcHostname,
  */
 bool MDNSResponder::close(void) {
 
-	m_GotIPHandler.reset();			// reset WiFi event callbacks.
-	m_DisconnectedHandler.reset();
+    m_GotIPHandler.reset();			// reset WiFi event callbacks.
+    m_DisconnectedHandler.reset();
 
-	_announce(false, true);
+    _announce(false, true);
     _resetProbeStatus(false);   // Stop probing
 
     _releaseServiceQueries();
@@ -159,7 +159,7 @@ bool MDNSResponder::close(void) {
  */
 
 bool MDNSResponder::end(void) {
-	return close();
+    return close();
 }
 
 /*
@@ -832,11 +832,11 @@ uint32_t MDNSResponder::answerCount(const MDNSResponder::hMDNSServiceQuery p_hSe
 
 std::vector<MDNSResponder::MDNSServiceInfo>  MDNSResponder::answerInfo (const MDNSResponder::hMDNSServiceQuery p_hServiceQuery) {
     std::vector<MDNSResponder::MDNSServiceInfo> tempVector;
-	for (uint32_t i=0;i<answerCount(p_hServiceQuery);i++)
+    for (uint32_t i=0;i<answerCount(p_hServiceQuery);i++)
     {
-		tempVector.emplace_back(*this,p_hServiceQuery,i);
+        tempVector.emplace_back(*this,p_hServiceQuery,i);
     }
-	return tempVector;
+    return tempVector;
 }
 
 /*
@@ -1053,14 +1053,14 @@ const char* MDNSResponder::answerTxts(const MDNSResponder::hMDNSServiceQuery p_h
  */
 bool MDNSResponder::setHostProbeResultCallback(MDNSResponder::MDNSHostProbeFn p_fnCallback) {
 
-	m_HostProbeInformation.m_fnHostProbeResultCallback = p_fnCallback;
+    m_HostProbeInformation.m_fnHostProbeResultCallback = p_fnCallback;
 
     return true;
 }
 
 bool MDNSResponder::setHostProbeResultCallback(MDNSHostProbeFn1 pfn) {
-	using namespace std::placeholders;
-	return setHostProbeResultCallback(std::bind(pfn, std::ref(*this), _1, _2));
+    using namespace std::placeholders;
+    return setHostProbeResultCallback([resp=std::ref(*this), pfn](const char* p_pcDomainName, bool p_bProbeResult) { pfn(resp, p_pcDomainName, p_bProbeResult); });
 }
 
 /*
@@ -1088,8 +1088,10 @@ bool MDNSResponder::setServiceProbeResultCallback(const MDNSResponder::hMDNSServ
 
 bool MDNSResponder::setServiceProbeResultCallback(const MDNSResponder::hMDNSService p_hService,
                                                   MDNSResponder::MDNSServiceProbeFn1 p_fnCallback) {
-	using namespace std::placeholders;
-	return setServiceProbeResultCallback(p_hService, std::bind(p_fnCallback, std::ref(*this), _1, _2, _3));
+    using namespace std::placeholders;
+    return setServiceProbeResultCallback(p_hService, [resp=std::ref(*this), p_fnCallback](const char* p_pcServiceName, const hMDNSService p_hMDNSService, bool p_bProbeResult) {
+        p_fnCallback(resp, p_pcServiceName, p_hMDNSService, p_bProbeResult);
+    });
 }
 
 

libraries/Ticker/Ticker.h

@@ -43,7 +43,7 @@ class Ticker
 
 	void attach_scheduled(float seconds, callback_function_t callback)
 	{
-		attach(seconds,std::bind(schedule_function, callback));
+		attach(seconds, [callback]() { schedule_function(callback); });
 	}
 
 	void attach(float seconds, callback_function_t callback)
@@ -54,7 +54,7 @@ class Ticker
 
 	void attach_ms_scheduled(uint32_t milliseconds, callback_function_t callback)
 	{
-		attach_ms(milliseconds, std::bind(schedule_function, callback));
+		attach_ms(milliseconds, [callback]() { schedule_function(callback); });
 	}
 
 	void attach_ms(uint32_t milliseconds, callback_function_t callback)
@@ -84,7 +84,7 @@ class Ticker
 
 	void once_scheduled(float seconds, callback_function_t callback)
 	{
-		once(seconds, std::bind(schedule_function, callback));
+		once(seconds, [callback]() { schedule_function(callback); });
 	}
 
 	void once(float seconds, callback_function_t callback)
@@ -95,7 +95,7 @@ class Ticker
 
 	void once_ms_scheduled(uint32_t milliseconds, callback_function_t callback)
 	{
-		once_ms(milliseconds, std::bind(schedule_function, callback));
+		once_ms(milliseconds, [callback]() { schedule_function(callback); });
 	}
 
 	void once_ms(uint32_t milliseconds, callback_function_t callback)