C# HashSet IsSupersetOf

Description

HashSet IsSupersetOf determines whether a HashSet object is a superset of the specified collection.

Syntax

HashSet.IsSupersetOf has the following syntax.

public bool IsSupersetOf(
  IEnumerable<T> other
)

Parameters

HashSet.IsSupersetOf has the following parameters.

• other - The collection to compare to the current HashSet object.

Returns

HashSet.IsSupersetOf method returns true if the HashSet object is a superset of other; otherwise, false.

Example

The following example creates two disparate HashSet objects and compares them to each other.

// ww w.j  a  v  a 2  s.co  m
using System;
using System.Collections.Generic;
public class MainClass{
  public static void Main(String[] argv){  
    HashSet<int> lowNumbers = new HashSet<int>();
    HashSet<int> allNumbers = new HashSet<int>();

    for (int i = 1; i < 5; i++)
    {
        lowNumbers.Add(i);
    }

    for (int i = 0; i < 10; i++)
    {
        allNumbers.Add(i);
    }

    Console.WriteLine(lowNumbers.IsSupersetOf(allNumbers));

  }
}
    

The code above generates the following result.