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  2. Method (computer programming) - Wikipedia

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

    For example, if there were a Product class it might have a static method to compute the average price of all products. A static method can be invoked even if no instances of the class exist yet. Static methods are called "static" because they are resolved at compile time based on the class they are called on and not dynamically as in the case ...

  3. Class (computer programming) - Wikipedia

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

    Not all languages support multiple inheritance. For example, Java allows a class to implement multiple interfaces, but only inherit from one class. [22] If multiple inheritance is allowed, the hierarchy is a directed acyclic graph (or DAG for short), otherwise it is a tree. The hierarchy has classes as nodes and inheritance relationships as links.

  4. Constant interface - Wikipedia

    en.wikipedia.org/wiki/Constant_interface

    An instance of the interface is syntactically no more useful than the interface name itself (since it has no methods). Unless a developer checks any implemented interfaces when adding a constant to a class, or does so but makes a typo in the name of the added constant, the value of a constant can be silently changed. Consider Example 2 below.

  5. One Definition Rule - Wikipedia

    en.wikipedia.org/wiki/One_Definition_Rule

    class C {}; // first definition of C class C {}; // error, second definition of C In the following, forming a pointer to S or defining a function taking a reference to S are examples of legal constructs, because they do not require the type of S to be complete .

  6. Declaration (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Declaration_(computer...

    In computer programming, a declaration is a language construct specifying identifier properties: it declares a word's (identifier's) meaning. [1] Declarations are most commonly used for functions, variables, constants, and classes, but can also be used for other entities such as enumerations and type definitions. [1]

  7. Type signature - Wikipedia

    en.wikipedia.org/wiki/Type_signature

    Thus, calling f x, where f:: a-> b-> c, yields a new function f2:: b-> c that can be called f2 b to produce c. The actual type specifications can consist of an actual type, such as Integer, or a general type variable that is used in parametric polymorphic functions, such as a, or b, or anyType. So we can write something like: functionName:: a ...

  8. Static import - Wikipedia

    en.wikipedia.org/wiki/Static_import

    Static import is a feature introduced in the Java programming language that allows members (fields and methods) which have been scoped within their container class as public static, to be used in Java code without specifying the class in which the field has been defined.

  9. C Sharp syntax - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_syntax

    A class or abstract class may implement one or more interfaces. An interface can only extend other interfaces. An abstract class may have non-public methods and properties (also abstract ones). An interface can only have public members. An abstract class may have constants, static methods and static members. An interface cannot.