What is a HashSet in C# and how do I use it?
An example of an AI chatbot conversation about using HashSet in C# programming.
What is a HashSet in C# and how do I use it?
A HashSet in C# is a collection that contains no duplicate elements and is not sorted. It's useful for fast lookups.
Can you show me an example of how to create and use a HashSet?
Sure! You can create a HashSet like this: HashSet<int> numbers = new HashSet<int>(); Then, you can add elements using numbers.Add(1);.
How do I check if an item exists in a HashSet?
You can use the Contains method. For example, bool exists = numbers.Contains(1); will return true if 1 is in the HashSet.
What are the performance benefits of using a HashSet?
HashSets provide O(1) time complexity for add, remove, and contains operations, making them very efficient for large datasets.
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