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

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Initializes a new instance of the HashSet<T> class that uses the default 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
)

Parameters

collection
Type: System.Collections.Generic.IEnumerable<T>
The collection whose elements are copied to the new set.

ExceptionCondition
ArgumentNullException

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.

Windows Phone OS

Supported in: 8.1, 8.0

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