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{{Short description|Applying polymorphic functions to arguments of different types}}
{{Polymorphism}}
In [[programming languages]], '''ad hoc polymorphism'''<ref>C. Strachey, [http://www.ics.uci.edu/~jajones/INF102-S18/readings/05_stratchey_1967.pdf Fundamental concepts in programming languages]. Lecture notes for International Summer School in Computer Programming, Copenhagen, August 1967</ref> is a kind of [[polymorphism (computer science)|polymorphism]] in which polymorphic functions can be applied to arguments of different types, because a polymorphic function can denote a number of distinct and potentially heterogeneous implementations depending on the type of argument(s) to which it is applied. When applied to [[Object-oriented programming|object-oriented]] or procedural concepts, it is also known as [[function overloading]] or [[operator overloading]]. The term [[ad hoc]] in this context is not intended to be pejorative; it refers simply to the fact that this type of polymorphism is not a fundamental feature of the [[type system]]. This is in contrast to [[parametric polymorphism]], in which polymorphic functions are written without mention of any specific type, and can thus apply a single abstract implementation to any number of types in a transparent way. This classification was introduced by [[Christopher Strachey]] in 1967.
==Early binding==
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