Super sexy hot girl. super call would carry the context of C (C+B+A) whereas your answers creates an instance of A without the context of B and C. When I try to run it as at the end of the file I get this stacktrace: AttributeError: 'super' object has no attribute do_something class Parent: def __init__(self): Nov 4, 2010 · I'm currently learning about class inheritance in my Java course and I don't understand when to use the super() call? Edit: I found this example of code where super. The drainTo method Feb 25, 2009 · It's a nice trick but even that is not always equivalent to calling the unavilable, yet needed) super. Oct 24, 2012 · super() is how the parent or super class constructor for a Java class is invoked in a derived class. Sep 22, 2010 · super() is a special use of the super keyword where you call a parameterless parent constructor. e. super and that is because the super. Sep 22, 2010 · super() is a special use of the super keyword where you call a parameterless parent constructor. I would not recommend using it with classes using linear inheritance, where it's just useless overhead. variable is used: class A { In the child template, I would like to include everything that was in the head block from the base (by calling {{ super()) }} and include some additional things, yet at the same time replace the title block within the super call. Sep 2, 2009 · The first (<? super E>) says that it's "some type which is an ancestor (superclass) of E"; the second (<? extends E>) says that it's "some type which is a subclass of E". 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"). But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen. Jul 9, 2018 · I wrote the following code. . In general, the super keyword can be used to call overridden methods, access hidden fields or invoke a superclass's constructor. (In both cases E itself is okay. it's compatible). In fact, multiple inheritance is the only case where super() is of any use. There was a fair amount of churn in the terminology during the first years of object oriented programming as various people worked in the area and published papers and books and developed Object Oriented Languages. ) 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. Feb 23, 2009 · super() lets you avoid referring to the base class explicitly, which can be nice.
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