By using generics you can do the following:
- Improve the type safety of your code; for example, in TypeScript, you can accept generic types instead of having to rely on the any keyword.
- Avoid unnecessary type casts.
- Define generic algorithms that are applicable to different data types.
- Define generic data structures that can manipulate different data types.
- Create a link between the input and output types of your functions (for example, define a function that returns a Person type if it receives a Person type as input).