As stated above, is it redundant to inherit from Object in c#? Do both sets of code below result in equivalent objects being defined?
class TestClassUno : Object { // Stuff }
vs.
class TestClassDos { // Stuff }
I snooped around on MSDN but wasn't able to find anything perfectly conclusive.
They behave like Objects, they can be added to collections of type Object, they can use any method defined in Object. So, YES, everything (except primitives) inherit from Object in Java.
C# classes don't require to declare the inheritance from the Object class as the inheritance is implicit. Every method defined in the Object class is available in all objects in the system as all classes in the . NET Framework are derived from the Object class.
In C#, inheritance allows us to create a new class from an existing class. It is a key feature of Object-Oriented Programming (OOP). The derived class inherits the fields and methods of the base class. This helps with the code reusability in C#.
The symbol used for inheritance is :. Syntax: class derived-class : base-class { // methods and fields . . } Example: In below example of inheritance, class GFG is a base class, class GeeksforGeeks is a derived class which extends GFG class and class Sudo is a driver class to run program.
If left unspecified every class
definition will implicitly inherit from System.Object
hence the two definitions are equivalent.
The only time these two would be different is if someone actually defined another Object
type in the same namespace. In this case the local definition of Object
would take precedence and change the inheritance object
namespace Example { class Object { } class C : Object { } }
Very much a corner case but wouldn't point it out if I hadn't seen it before
Note that the same is not true if you used object
instead of Object
. The C# keyword object
is a type alias for System.Object
and hence it wouldn't match Example.Object
.
namespace Example2 { class Object { } class C : Object { } // Uses Example.Object class D : object { } // Uses System.Object }
Of course if you have a truly evil developer you could still cause confusion with object
namespace System { class Object { private Object() { } } } namespace Example3 { // This will properly fail to compile since it can't bind to the private // Object constructor. This demonstrates that we are using our definition // of Object instead of mscorlib's class C : object { } // Uses our System.Object }
Yes, everything ultimately inherits from an object if defined as class
. Leave the explicit inheritance out of your code.
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