Enumerable.ToHashSet Method

Definition

Namespace:

System.Linq

Assembly:

System.Linq.dll

Overloads

ToHashSet<TSource>(IEnumerable<TSource>)	Creates a HashSet<T> from an IEnumerable<T>.
ToHashSet<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)	Creates a HashSet<T> from an IEnumerable<T> using the comparer to compare keys.

ToHashSet<TSource>(IEnumerable<TSource>)

Source:

ToCollection.cs

Creates a HashSet<T> from an IEnumerable<T>.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Collections::Generic::HashSet<TSource> ^ ToHashSet(System::Collections::Generic::IEnumerable<TSource> ^ source);

public static System.Collections.Generic.HashSet<TSource> ToHashSet<TSource> (this System.Collections.Generic.IEnumerable<TSource> source);

static member ToHashSet : seq<'Source> -> System.Collections.Generic.HashSet<'Source>

<Extension()>
Public Function ToHashSet(Of TSource) (source As IEnumerable(Of TSource)) As HashSet(Of TSource)

Type Parameters

TSource

The type of the elements of source.

Parameters

source

IEnumerable<TSource>

An IEnumerable<T> to create a HashSet<T> from.

Returns

HashSet<TSource>

A HashSet<T> that contains values of type TSource selected from the input sequence.

Exceptions

ArgumentNullException

source is null.

See also

• ToHashSet<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

ToHashSet<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)

Source:

ToCollection.cs

Creates a HashSet<T> from an IEnumerable<T> using the comparer to compare keys.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Collections::Generic::HashSet<TSource> ^ ToHashSet(System::Collections::Generic::IEnumerable<TSource> ^ source, System::Collections::Generic::IEqualityComparer<TSource> ^ comparer);

public static System.Collections.Generic.HashSet<TSource> ToHashSet<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, System.Collections.Generic.IEqualityComparer<TSource>? comparer);

static member ToHashSet : seq<'Source> * System.Collections.Generic.IEqualityComparer<'Source> -> System.Collections.Generic.HashSet<'Source>

<Extension()>
Public Function ToHashSet(Of TSource) (source As IEnumerable(Of TSource), comparer As IEqualityComparer(Of TSource)) As HashSet(Of TSource)

Type Parameters

TSource

The type of the elements of source.

Parameters

source

IEnumerable<TSource>

An IEnumerable<T> to create a HashSet<T> from.

comparer

IEqualityComparer<TSource>

An IEqualityComparer<T> to compare keys.

Returns

HashSet<TSource>

A HashSet<T> that contains values of type TSource selected from the input sequence.

Exceptions

ArgumentNullException

source is null.

See also

• ToHashSet<TSource>(IEnumerable<TSource>)