How do I call the parent function from a derived class using C++? For example, I have a class called parent, and a class called child which is derived from parent. Within each class there is a print
As for chaining super::super, as I mentionned in the question, I have still to find an interesting use to that. For now, I only see it as a hack, but it was worth mentioning, if only for the differences with Java (where you can't chain "super").
In fact, multiple inheritance is the only case where super() is of any use. I would not recommend using it with classes using linear inheritance, where it's just useless overhead.
super() lets you avoid referring to the base class explicitly, which can be nice. But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen.
Actually, super.init() should be called ASAP, especially in Swift. The rule is that the super-state (the state provided by superclasses) should be initialized first. Obviously this is not always possible or desired, but it should definitely be preferred.
The only workaround I found is to declare all members final yourself and use the @Data annotation instead. Those subclasses need to be annotated by @EqualsAndHashCode and need an explicit all args constructor as Lombok doesn't know how to create one using the all args one of the super class:
The one without super hard-codes its parent's method - thus is has restricted the behavior of its method, and subclasses cannot inject functionality in the call chain. The one with super has greater flexibility. The call chain for the methods can be intercepted and functionality injected.
I'm creating a class to manage exception in c#, and I'd like to create some constructor methods which recalls the superclass; this is the definition of my class: class DataSourceNotFoundException:
I guess the title says it all: Is there some kind of flag that allows my GWT app to check whether it is currently running in Super Dev Mode (something along the lines of GWT.isProdMode(), maybe)?
