AsyncEnumerable.LongCountAsync Method (System.Linq) (original) (raw)
Definition
Namespace:
Assembly:
System.Linq.AsyncEnumerable.dll
Package:
System.Linq.AsyncEnumerable v10.0.0-preview.5.25277.114
Important
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Overloads
LongCountAsync(IAsyncEnumerable, CancellationToken)
Source:
Source:
Returns the number of elements in a sequence satisfy a condition.
public static System.Threading.Tasks.ValueTask<long> LongCountAsync<TSource>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, System.Threading.CancellationToken cancellationToken = default);static member LongCountAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<int64><Extension()>
Public Function LongCountAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Long)Type Parameters
TSource
The type of the elements of source.
Parameters
source
A sequence that contains elements to be tested and counted.
Returns
The number of elements in the input sequence that satisfy the condition in the predicate function.
Exceptions
Applies to
LongCountAsync(IAsyncEnumerable, Func<TSource,Boolean>, CancellationToken)
Source:
Source:
Returns the number of elements in a sequence satisfy a condition.
public static System.Threading.Tasks.ValueTask<long> LongCountAsync<TSource>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,bool> predicate, System.Threading.CancellationToken cancellationToken = default);static member LongCountAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, bool> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<int64><Extension()>
Public Function LongCountAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), predicate As Func(Of TSource, Boolean), Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Long)Type Parameters
TSource
The type of the elements of source.
Parameters
source
A sequence that contains elements to be tested and counted.
predicate
A function to test each element for a condition.
Returns
The number of elements in the input sequence that satisfy the condition in the predicate function.
Exceptions
Applies to
LongCountAsync(IAsyncEnumerable, Func<TSource,CancellationToken,ValueTask>, CancellationToken)
Source:
Source:
Returns the number of elements in a sequence satisfy a condition.
public static System.Threading.Tasks.ValueTask<long> LongCountAsync<TSource>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<bool>> predicate, System.Threading.CancellationToken cancellationToken = default);static member LongCountAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<bool>> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<int64><Extension()>
Public Function LongCountAsync(Of TSource) (source As IAsyncEnumerable(Of TSource), predicate As Func(Of TSource, CancellationToken, ValueTask(Of Boolean)), Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Long)Type Parameters
TSource
The type of the elements of source.
Parameters
source
A sequence that contains elements to be tested and counted.
Returns
The number of elements in the input sequence that satisfy the condition in the predicate function.