Polymorphism is an actively used design pattern created in 1960. In programming languages and type theory, polymorphism is the provision of a single interface to entities of different types or the use of a single symbol to represent multiple different types.The most commonly recognised major classes of polymorphism are: Ad hoc polymorphism: defines a common interface for an arbitrary set of individually specified types. Parametric polymorphism: when one or more types are not specified by name but by abstract symbols that can represent any type. Subtyping (also called subtype polymorphism or inclusion polymorphism): when a name denotes instances of many different classes related by some common superclass.. Read more on Wikipedia...

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Languages with Polymorphism include javascript, pascal

Example from javascript:

"a" + "b"; 1 + 2

Last updated November 16th, 2019