Understanding Generics in TypeScript for Improved Code Reusability

What Are Generics in TypeScript? Generics are a feature in TypeScript that allow you to create reusable components that work with a variety of data types, rather than a single one. They enable you to write functions, interfaces, and classes that can operate with different data types while still maintaining type safety. Why Use Generics? Code Reusability: Write a function or a class once and use it for any data type. Type Safety: TypeScript keeps track of the types used, avoiding runtime errors. Flexibility: Functions and classes become more flexible and adaptable to changing requirements. Example: Generic Function Suppose you want a function to return the same argument passed to it: function identity < T > ( arg : T ): T { return arg ; } const num = identity ( 5 ); // num is of type number const str = identity ( " hello " ); // str is of type string In this example, the type T is a placeholder that will be replaced with the actual type when the function is used. This means you can use