What is immutability in functional programming?
Immutability in functional programming means that once a data structure is created, it cannot be changed. Instead of modifying existing data, new data structures are created.
Why is immutability important?
Immutability helps in avoiding side effects, making code easier to understand, and enabling safer concurrent programming.
Can you give an example of an immutable data structure?
Sure! In languages like Haskell, lists are immutable. When you 'add' an element, a new list is created instead of modifying the original.
How does immutability affect performance?
Immutability can lead to performance overhead due to the creation of new data structures, but it can also enable optimizations like structural sharing.
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