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
- C# | Add element to HashSet
- HashSet in C# with Examples
- C# | Check if a HashSet contains the specified element
- C# | Number of elements in HashSet
- C# | Remove all elements from a HashSet
- C# | Create HashSet from another collection
- C# | Getting an enumerator that iterates through HashSet<T>
- C# | Remove the specified element from a HashSet
- C# | Check if HashSet and the specified collection contain the same elements
- C# | Check if two HashSet<T> objects are equal
- C# | Check if a HashSet is a subset of the specified collection
- C# | Check if a HashSet is a superset of the specified collection
- C# | Remove all elements in a collection from a HashSet
- C# | Check if a HashSet is a proper superset of the specified collection
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