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Big Money Flowing Into Close Georgia Runoff Election 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. 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.

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GEORGIA Runoff: THIS Is What The Media Do To Black Republicans 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. 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"). 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". (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. it's compatible). the drainto method.

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Secretive GOP Super PAC To Pour $43 Million Into Georgia Senate Runoff ... 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"). 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". (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. it's compatible). the drainto method. 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.variable is used: class a {. 4. super key: if you add any other column/attribute to a primary key then it become a super key, like employeeid fullname is a super key. 5. composite key: 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. I wrote the following code. 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):.

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Super PACS Run By Former McConnell Aides Are Pouring Money Into Georgia ... 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.variable is used: class a {. 4. super key: if you add any other column/attribute to a primary key then it become a super key, like employeeid fullname is a super key. 5. composite key: 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. I wrote the following code. 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):.

Super PACs pouring money into Georgia runoff election | Rush Hour