What are immutable data structures in JavaScript?

What are immutable data structures in JavaScript?

Immutable data structures are data types that cannot be changed after they are created. In JavaScript, libraries like Immutable.js provide these structures, allowing for efficient data manipulation without side effects.

Can you give me an example of how to use Immutable.js?

Sure! Here's a simple example: you can create an immutable List using Immutable.js like this: const { List } = require('immutable'); const myList = List([1, 2, 3]); This list cannot be modified directly.

What are the benefits of using immutable data structures?

The benefits include easier debugging, improved performance in certain scenarios, and safer concurrent programming since immutable data cannot be changed unexpectedly.

Are there any downsides to using them?

Yes, some downsides include increased memory usage and potential performance overhead when creating new versions of data structures instead of modifying existing ones.