A HashSet is an unordered collection of the unique elements. It comes under the 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. For the Union of two HashSet, HashSet
Exception: If the Set is null then this method give ArgumentNullException.
Below given are some examples to understand the implementation in a better way:
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- C# | HashSet Class
- HashSet in C# with Examples
- C# | Add element to HashSet
- C# | Remove all elements from a HashSet
- C# | Check if a HashSet contains the specified element
- C# | Getting an enumerator that iterates through HashSet<T>
- C# | Create HashSet from another collection
- C# | Remove the specified element from a HashSet
- C# | Number of elements in HashSet
- C# | Check if a HashSet is a subset of the specified collection
- C# | Check if two HashSet<T> objects are equal
- C# | Remove all elements in a collection from a HashSet
- C# | Check if a HashSet is a superset of the specified collection
- C# | Check if HashSet and the specified collection contain the same elements
- C# | Check if a HashSet is a proper subset of the specified collection
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