AsyncEnumerable.ToHashSetAsync<TSource> Method
Definition
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
A HashSet<T> that contains values of type TSource selected from the input sequence.
Exceptions
source is null.
Applies to
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