HashSet<T> Constructor ()
Initializes a new instance of the HashSet<T> class that is empty and uses the default equality comparer for the set type.
Assembly: System.Core (in System.Core.dll)
The capacity of a HashSet<T> object is the number of elements that the object can hold. A HashSet<T> object's capacity automatically increases as elements are added to the object.
This constructor is an O(1) operation.
The following example demonstrates how to create and populate two HashSet<T> objects. This example is part of a larger example provided for the UnionWith method.
HashSet<int> evenNumbers = new HashSet<int>(); HashSet<int> oddNumbers = new HashSet<int>(); for (int i = 0; i < 5; i++) { // Populate numbers with just even numbers. evenNumbers.Add(i * 2); // Populate oddNumbers with just odd numbers. oddNumbers.Add((i * 2) + 1); }
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1