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.
Assembly: System.Core (in System.Core.dll)
Parameters
- collection
- Type: System.Collections.Generic.IEnumerable<T>
The collection whose elements are copied to the new set.
| Exception | Condition |
|---|---|
| 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.