I have an abstract class for moving data from one database to another, and sometimes the data required to create the basic entries is different, due to the presence of a legacy table in the destinatio
I understand that to instantiate an inner class (i.e. non-static), you need an instance of the enclosing class. This makes things a little more complicated if the enclosing class is abstract (don\'t a
I have three classes which basically do very similar things; Store a record of an uploaded file. Move and upload the file.
In order to better organize my code in a PHP project (a simple CMS) I\'m considering moving most of my System functions to an abstract class as static members. Aside from the organizational and syntac
So, for example, StringBuilder inherits from the abstract class AbstractStringBuilder. As I understand it, StringBuilder has no fields itself (except for serialVersionUID). Rather, its state is repres
. Here I was discussing Empty Base Optimization, and MSalters made this interesting comment: No class can ever have
Ho开发者_StackOverflow社区w do I create an object of an abstract class and interface? I know we can\'t instantiate an object of an abstract class directly.You can not instantiate an abstract class or
In this thread I found so开发者_StackOverflow社区me interesting moment, If class uses only as superclass there isn\'t rule to make it abstract. Why so?
I get this error on compile -> cannot declare field M1::sc to be of abstract type I1 because the following virtual functions are pure within I1. Please help.
Is it possible to have an abstract property which returns a type defined in the derived class: abstract class baseClass
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