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Complex inheritance, or inheritance used within an insufficiently mature design, may lead to the yo-yo problem. When inheritance was used as a primary approach to structure programs in the late 1990s, developers tended to break code into more layers of inheritance as the system functionality grew.
Composition over inheritance (or composite reuse principle) in object-oriented programming (OOP) is the principle that classes should favor polymorphic behavior and code reuse by their composition (by containing instances of other classes that implement the desired functionality) over inheritance from a base or parent class. [2]
Multiple inheritance is a feature of some object-oriented computer programming languages in which an object or class can inherit features from more than one parent object or parent class. It is distinct from single inheritance, where an object or class may only inherit from one particular object or class.
The factory method pattern relies on inheritance, as object creation is delegated to subclasses that implement the factory method to create objects. [3] The pattern can also rely on the implementation of an interface.
Multiple inheritance is allowed in some languages, though this can make resolving overrides complicated. Some languages have special support for other concepts like traits and mixins, though, in any language with multiple inheritance, a mixin is simply a class that does not represent an is-a-type-of relationship. Mixins are typically used to ...
A class hierarchy or inheritance tree in computer science is a classification of object types, ... (Java, C++, Smalltalk, Visual Prolog) ...
The curiously recurring template pattern (CRTP) is an idiom, originally in C++, in which a class X derives from a class template instantiation using X itself as a template argument. [1] More generally it is known as F-bound polymorphism , and it is a form of F -bounded quantification .
However, since multiple inheritance is slightly less efficient than single inheritance anyway, the overhead will not be a major problem. [ 1 ] [ 2 ] Cyclic reference - The Twin pattern relies on each twin referencing the other twin, which causes a cyclic reference scenario.