Delegate template programming for > 3 platforms is interesting.

dok-net · dok-net · commit 2433994407ba · 2021-06-08T03:49:03.000+02:00
diff --git a/cores/esp8266/Delegate.h b/cores/esp8266/Delegate.h
@@ -1776,13 +1776,11 @@ template<typename R, typename A, typename... P> class Delegate<R(P...), A> : pub
 {
 public:
     using detail::Delegate<R, A, P...>::Delegate;
-    using detail::Delegate<R, A, P...>::operator=;
 };
 template<typename R, typename... P> class Delegate<R(P...)> : public detail::Delegate<R, void, P...>
 {
 public:
     using detail::Delegate<R, void, P...>::Delegate;
-    using detail::Delegate<R, void, P...>::operator=;
 };
 
 #endif // __Delegate_h

Original file line number	Diff line number	Diff line change
`@@ -1776,13 +1776,11 @@ template<typename R, typename A, typename... P> class Delegate<R(P...), A> : pub`
`1776`	`1776`	`{`
`1777`	`1777`	`public:`
`1778`	`1778`	`using detail::Delegate<R, A, P...>::Delegate;`
`1779`		`- using detail::Delegate<R, A, P...>::operator=;`
`1780`	`1779`	`};`
`1781`	`1780`	`template<typename R, typename... P> class Delegate<R(P...)> : public detail::Delegate<R, void, P...>`
`1782`	`1781`	`{`
`1783`	`1782`	`public:`
`1784`	`1783`	`using detail::Delegate<R, void, P...>::Delegate;`
`1785`		`- using detail::Delegate<R, void, P...>::operator=;`
`1786`	`1784`	`};`
`1787`	`1785`
`1788`	`1786`	`#endif // __Delegate_h`