But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen. If you add any other column/attribute to a primary key then it become a super key, like employeeid + fullname is a super key The one with super has greater flexibility
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The call chain for the methods can be intercepted and functionality injected.
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. 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). I'm currently learning about class inheritance in my java course and i don't understand when to use the super() call
I found this example of code where super.variable is used 'super' object has no attribute '__sklearn_tags__' This occurs when i invoke the fit method on the randomizedsearchcv object I attempted to tune the hyperparameters of an xgbregressor.
Super e>) says that it's some type which is an ancestor (superclass) of e
Extends e>) says that it's some type which is a subclass of e (in both cases e itself is okay.) so the constructor uses the Extends e form so it guarantees that when it fetches values from the collection, they will all be e or some subclass (i.e How to add super privileges to mysql database
Asked 13 years, 2 months ago modified 1 year, 3 months ago viewed 409k times 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:
