Give a description of what parametric polymorphism is and how it functions, as well asan example of how it is utilized in a subprogram.

Answered: Give a description of what parametric…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Give a description of what parametric polymorphism is and how it functions, as well as
an example of how it is utilized in a subprogram.

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Parametric polymorphism is a form of typecasting in which a subprogram can take arguments of different types.

For example:- A function that takes an integer and a string and outputs a new string could be written as follows:

def func(x: Int, y: String): String = {

return x.toString + y

}

In the example, the function takes two arguments, an integer and a string, and outputs a new string. The function is parametrically polymorphic because it can take arguments of different types (in this case, an integer and a string).

Parametric polymorphism is used in many programming languages, including Scala, Haskell, and ML.

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