C# | Check if a HashSet is a superset of the specified collection
Sure, here’s an example code that demonstrates using the IsSupersetOf method to check if a HashSet<string> is a superset of a List<string> and then printing out a message indicating the result:
The HashSet is a superset of the List.
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. HashSet<T>.IsSupersetOf(IEnumerable) method is used to check whether a HashSet object is a superset of the specified collection or not. Syntax:
Here, mySet1 and mySet2 are the two HashSets.
Return Value: This method returns True if the HashSet object is a superset of another subset otherwise it returns False.
Exception: This method will give ArgumentNullException if the HashSet is null.
Below given are some examples to understand the implementation in a better way:
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