AsyncEnumerable.ToHashSetAsync<TSource> Method

Definition

Namespace:

System.Linq

Assembly:

System.Linq.AsyncEnumerable.dll

Package:

System.Linq.AsyncEnumerable v10.0.0-preview.1.25080.5

Source:

ToHashSetAsync.cs

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

public static System.Threading.Tasks.ValueTask<System.Collections.Generic.HashSet<TSource>> ToHashSetAsync<TSource>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, System.Collections.Generic.IEqualityComparer<TSource>? comparer = default, System.Threading.CancellationToken cancellationToken = default);

static member ToHashSetAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Collections.Generic.IEqualityComparer<'Source> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.HashSet<'Source>>

<Extension()>
Public Function ToHashSetAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), Optional comparer As IEqualityComparer(Of TSource) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of HashSet(Of TSource))

Type Parameters

TSource

The type of the elements of source.

Parameters

source

IAsyncEnumerable<TSource>

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

comparer

IEqualityComparer<TSource>

An IEqualityComparer<T> to compare keys.

cancellationToken

CancellationToken

The CancellationToken to monitor for cancellation requests. The default is None.

Returns

ValueTask<HashSet<TSource>>

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

Exceptions

ArgumentNullException

source is null.