AsyncEnumerable.ToHashSetAsync<TSource> Method

Reference

Definition

Namespace:: System.Linq

Assembly:: System.Linq.AsyncEnumerable.dll

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

Source:: ToHashSetAsync.cs

Important

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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.

Applies to

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