HashSet(T) Constructor (IEqualityComparer(T)) (System.Collections.Generic)

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Microsoft Visual Studio 2010/.NET Framework 4

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.NET Framework Class Library

HashSet<(Of <(T>)>) Constructor (IEqualityComparer<(Of <(T>)>))

Initializes a new instance of the HashSet<(Of <(T>)>) class that is empty and uses the specified equality comparer for the set type.

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

Syntax

Visual Basic

Public Sub New ( _
    comparer As IEqualityComparer(Of T) _
)

public HashSet(
    IEqualityComparer<T> comparer
)

Visual C++

public:
HashSet(
    IEqualityComparer<T>^ comparer
)

new : 
        comparer:IEqualityComparer<'T> -> HashSet

Parameters

comparer: Type: System.Collections.Generic..::.IEqualityComparer<(Of <(T>)>)
The IEqualityComparer<(Of <(T>)>) implementation to use when comparing values in the set, or nullNothingnullptra null reference (Nothing in Visual Basic) to use the default EqualityComparer<(Of <(T>)>) implementation for the set type.

Remarks

The capacity of a HashSet<(Of <(T>)>) object is the number of elements that the object can hold. A HashSet<(Of <(T>)>) object's capacity automatically increases as elements are added to the object.

This constructor is an O(1) operation.

Version Information

.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

HashSet<(Of <(T>)>) Class

HashSet<(Of <(T>)>) Overload

System.Collections.Generic Namespace