HashSet<T> Constructor (IEnumerable<T>, IEqualityComparer<T>)

Initializes a new instance of the HashSet<T> class that uses the specified equality comparer for the set type, contains elements copied from the specified collection, and has sufficient capacity to accommodate the number of elements copied.

Namespace:  System.Collections.Generic
Assembly:  System.Core (in System.Core.dll)

public HashSet(
	IEnumerable<T> collection,
	IEqualityComparer<T> comparer


Type: System.Collections.Generic.IEnumerable<T>
The collection whose elements are copied to the new set.
Type: System.Collections.Generic.IEqualityComparer<T>
The IEqualityComparer<T> implementation to use when comparing values in the set, or null to use the default EqualityComparer<T> implementation for the set type.


collection is null.

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(n) operation, where n is the number of elements in the collection parameter.


Supported in: 5, 4

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.