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  2. Method overriding - Wikipedia

    en.wikipedia.org/wiki/Method_overriding

    The overridden base method must be virtual, abstract, or override. In addition to the modifiers that are used for method overriding, C# allows the hiding of an inherited property or method. This is done using the same signature of a property or method but adding the modifier new in front of it. [6] In the above example, hiding causes the following:

  3. C Sharp syntax - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_syntax

    override - Specifies that a method or property declaration is an override of a virtual member or an implementation of a member of an abstract class. readonly - Declares a field that can only be assigned values as part of the declaration or in a constructor in the same class. unsafe - Specifies an unsafe context, which allows the use of pointers.

  4. Composition over inheritance - Wikipedia

    en.wikipedia.org/wiki/Composition_over_inheritance

    The C++ examples in this section demonstrate the principle of using composition and interfaces to achieve code reuse and polymorphism. Due to the C++ language not having a dedicated keyword to declare interfaces, the following C++ example uses inheritance from a pure abstract base class.

  5. Inheritance (object-oriented programming) - Wikipedia

    en.wikipedia.org/wiki/Inheritance_(object...

    For instance, in C#, the base method or property can only be overridden in a subclass if it is marked with the virtual, abstract, or override modifier, while in programming languages such as Java, different methods can be called to override other methods. [15] An alternative to overriding is hiding the inherited code.

  6. Method (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Method_(computer_programming)

    Overriding refers to a subclass redefining the implementation of a method of its superclass. For example, findArea may be a method defined on a shape class, [2] triangle, etc. would each define the appropriate formula to calculate their area. The idea is to look at objects as "black boxes" so that changes to the internals of the object can be ...

  7. Access modifiers - Wikipedia

    en.wikipedia.org/wiki/Access_modifiers

    C# has the modifiers public, protected,internal, private, protected internal, private protected, and file. [4] Java has public , package , protected , and private ; package is the default, used if no other access modifier keyword is specified.

  8. Fragile base class - Wikipedia

    en.wikipedia.org/wiki/Fragile_base_class

    C# and VB.NET like Java have "sealed" and "Not Inheritable" class declaration keywords to prohibit inheritance, and require a subclass to use keyword "override" on overriding methods, [3] the same solution later adopted by Scala. Scala require a subclass to use keyword "override" explicitly in order to override a parent class method. In the ...

  9. Strongly typed identifier - Wikipedia

    en.wikipedia.org/wiki/Strongly_typed_identifier

    C# have records which provide immutability and equality testing. [1] The record is sealed to prevent inheritance. [2] It overrides the built-in ToString() method. [3]This example implementation includes a static method which can be used to initialize a new instance with a randomly generated globally unique identifier (GUID).