What are immutable collections in Scala?

What are immutable collections in Scala?

Immutable collections in Scala are data structures that cannot be modified after they are created. This means that any operation that would normally modify the collection, such as adding or removing elements, will instead return a new collection.

Can you give me examples of immutable collections?

Sure! Some common immutable collections in Scala include List, Set, and Map. For instance, a List can be created using List(1, 2, 3).

What are the benefits of using immutable collections?

Using immutable collections can lead to safer code, as they prevent unintended side effects. They also enable easier reasoning about code and can improve performance in concurrent applications.

How do I convert a mutable collection to an immutable one?

You can convert a mutable collection to an immutable one using the toList, toSet, or toMap methods, depending on the type of collection you are working with.