What are some examples of using sets in C#?

What are some examples of using sets in C#?

In C#, a set is typically represented by the HashSet<T> class. Would you like to see some code examples?

Yes, please provide a few code examples.

Sure! Here's a simple example:

HashSet<int> numbers = new HashSet<int>();
numbers.Add(1);
numbers.Add(2);
numbers.Add(3);

foreach (var number in numbers) {
    Console.WriteLine(number);
}

This will output 1, 2, and 3.

What about operations like union and intersection?

Great question! You can use methods like UnionWith and IntersectWith. For example:

HashSet<int> setA = new HashSet<int> { 1, 2, 3 };
HashSet<int> setB = new HashSet<int> { 2, 3, 4 };
setA.UnionWith(setB);
// setA now contains 1, 2, 3, 4