What is immutable state in functional programming?
Immutable state refers to data that cannot be changed after it is created. In functional programming, this means that instead of modifying existing data, new data structures are created from existing ones.
Why is immutability important?
Immutability helps prevent side effects, making programs easier to understand and debug. It also allows for safer concurrent programming.
Can you give an example of immutable data structures?
Sure! In languages like JavaScript, you can use libraries like Immutable.js to create immutable lists and maps. In Python, tuples are an example of an immutable data structure.
How does immutability affect performance?
While immutability can introduce overhead due to the creation of new data structures, it can also lead to optimizations like structural sharing, which can mitigate performance costs.
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