What are union and intersection types in programming?

Can you explain what union and intersection types are in programming?

Sure! Union types allow a variable to hold multiple types, while intersection types combine multiple types into one.

Can you give me an example of a union type?

Of course! In TypeScript, you can define a union type like this: let value: string | number; This means value can be either a string or a number.

And what about intersection types?

An intersection type combines multiple types. For example, type A = { x: number }; type B = { y: string }; type C = A & B; means C has both properties x and `y.

How are these types useful in programming?

They enhance type safety and flexibility, allowing developers to create more robust and maintainable code.