A HashSet is an unordered collection of the unique elements. It comes under System.Collections.Generic namespace. It is used in a situation where we want to prevent duplicates from being inserted in the collection. As far as performance is concerned, it is better in comparison to the list. Elements can be added to HashSet using HashSet
Here mySet is the name of the HashSet.
item: The element to add to the set.
Return Type: This method returns true if the element is added to the HashSet
Below given are some examples to understand the implementation in a better way:
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Geeks GeeksforGeeks GeeksClasses GeeksQuiz
- C# | Remove the specified element from a HashSet
- C# | Check if a HashSet contains the specified element
- C# | Union of two HashSet
- C# | HashSet Class
- HashSet in C# with Examples
- C# | Create HashSet from another collection
- C# | Number of elements in HashSet
- C# | Getting an enumerator that iterates through HashSet<T>
- C# | Remove all elements from a HashSet
- C# | Remove all elements in a collection from a HashSet
- C# | Check if a HashSet is a subset of the specified collection
- C# | Check if HashSet and the specified collection contain the same elements
- C# | Check if a HashSet is a superset of the specified collection
- C# | Check if two HashSet<T> objects are equal
- C# | Check if a HashSet is a proper superset of the specified collection
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