C# HashSet vs List: Which One to Use?
An example of an AI chatbot conversation about C# HashSet and List differences.
What are the main differences between HashSet and List in C#?
HashSet is an unordered collection that does not allow duplicates, while List is ordered and allows duplicates.
When should I use HashSet instead of List?
Use HashSet when you need fast lookups and uniqueness, and List when you need order and allow duplicates.
Can you give me an example of when to use each?
Sure! Use HashSet for storing unique user IDs, and List for maintaining a sequence of items like a shopping cart.
What are the performance implications of using one over the other?
HashSet generally offers O(1) time complexity for lookups, while List has O(n) for searching, making HashSet faster for large datasets.
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