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  2. C Sharp syntax - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_syntax

    This is a feature of C# 9.0. Similar to in scripting languages, ... An abstract class may have constants, static methods and static members. An interface cannot.

  3. Curiously recurring template pattern - Wikipedia

    en.wikipedia.org/wiki/Curiously_recurring...

    Some use cases for this pattern are static polymorphism and other metaprogramming techniques such as those described by Andrei Alexandrescu in Modern C++ Design. [7] It also figures prominently in the C++ implementation of the Data, Context, and Interaction paradigm. [8]

  4. Method overriding - Wikipedia

    en.wikipedia.org/wiki/Method_overriding

    In C#, class methods, indexers, properties and events can all be overridden. Non-virtual or static methods cannot be overridden. 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.

  5. Comparison of programming languages by type system

    en.wikipedia.org/wiki/Comparison_of_programming...

    This is a comparison of the features of the type systems and type checking of multiple programming languages.. Brief definitions A nominal type system means that the language decides whether types are compatible and/or equivalent based on explicit declarations and names.

  6. Comparison of C Sharp and Java - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_C_Sharp_and_Java

    C# has a static class syntax (not to be confused with static inner classes in Java), which restricts a class to only contain static methods. C# 3.0 introduces extension methods to allow users to statically add a method to a type (e.g., allowing foo.bar() where bar() can be an imported extension method working on the type of foo).

  7. Abstract type - Wikipedia

    en.wikipedia.org/wiki/Abstract_type

    //By default, all methods in all classes are concrete, unless the abstract keyword is used. public abstract class Demo {// An abstract class may include abstract methods, which have no implementation. public abstract int sum (int x, int y); // An abstract class may also include concrete methods. public int product (int x, int y) {return x * y;}} //By default, all methods in all interfaces are ...

  8. Class (computer programming) - Wikipedia

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

    [26] [27] In C++, an abstract class is a class having at least one abstract method given by the appropriate syntax in that language (a pure virtual function in C++ parlance). [25] A class consisting of only pure virtual methods is called a pure abstract base class (or pure ABC) in C++ and is also known as an interface by users of the language. [13]

  9. Bridge pattern - Wikipedia

    en.wikipedia.org/wiki/Bridge_pattern

    The bridge pattern is a design pattern used in software engineering that is meant to "decouple an abstraction from its implementation so that the two can vary independently", introduced by the Gang of Four. [1]