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Super() is a special use of the super keyword where you call a parameterless parent constructor In general, the super keyword can be used to call overridden methods, access hidden fields or invoke a superclass's constructor. 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).
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 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
If a table don't have any individual columns that qualifies for a candidate key, then you have to select 2 or more columns to make a row unique. 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 Can't be called from main method I wrote the following code
When i try to run it as at the end of the file i get this stacktrace 'super' object has no attribute do_something class parent
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