AsyncEnumerable.ExceptBy 方法

定义

命名空间:: System.Linq

程序集:: System.Linq.AsyncEnumerable.dll

包:: System.Linq.AsyncEnumerable v11.0.0-preview.4.26230.115

重要

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重载

名称	说明
ExceptBy<TSource,TKey>(IAsyncEnumerable<TSource>, IAsyncEnumerable<TKey>, Func<TSource,CancellationToken,ValueTask<TKey>>, IEqualityComparer<TKey>)	根据指定的键选择器函数生成两个序列的集差异。
ExceptBy<TSource,TKey>(IAsyncEnumerable<TSource>, IAsyncEnumerable<TKey>, Func<TSource,TKey>, IEqualityComparer<TKey>)	根据指定的键选择器函数生成两个序列的集差异。

ExceptBy<TSource,TKey>(IAsyncEnumerable<TSource>, IAsyncEnumerable<TKey>, Func<TSource,CancellationToken,ValueTask<TKey>>, IEqualityComparer<TKey>)

Source:: ExceptBy.cs

Source:: ExceptBy.cs

Source:: ExceptBy.cs

根据指定的键选择器函数生成两个序列的集差异。

public static System.Collections.Generic.IAsyncEnumerable<TSource> ExceptBy<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> first, System.Collections.Generic.IAsyncEnumerable<TKey> second, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default);

static member ExceptBy : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Collections.Generic.IAsyncEnumerable<'Key> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Key>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Collections.Generic.IAsyncEnumerable<'Source>

<Extension()>
Public Function ExceptBy(Of TSource, TKey) (first As IAsyncEnumerable(Of TSource), second As IAsyncEnumerable(Of TKey), keySelector As Func(Of TSource, CancellationToken, ValueTask(Of TKey)), Optional comparer As IEqualityComparer(Of TKey) = Nothing) As IAsyncEnumerable(Of TSource)

类型参数

TSource

输入序列的元素的类型。

TKey

要标识元素的键的类型。

参数

first: IAsyncEnumerable<TSource>

IAsyncEnumerable<T>将返回不在其中second的键。

second: IAsyncEnumerable<TKey>

第一 IAsyncEnumerable<T> 个序列中也发生的键将导致从返回的序列中删除这些元素。

keySelector: Func<TSource,CancellationToken,ValueTask<TKey>>

用于提取每个元素的键的函数。

comparer: IEqualityComparer<TKey>

要 IEqualityComparer<T> 比较的值。

IAsyncEnumerable<TSource>

一个序列，其中包含两个序列的元素集差异。

例外

ArgumentNullException

keySelector 是 null。

适用于

ExceptBy<TSource,TKey>(IAsyncEnumerable<TSource>, IAsyncEnumerable<TKey>, Func<TSource,TKey>, IEqualityComparer<TKey>)

Source:: ExceptBy.cs

Source:: ExceptBy.cs

Source:: ExceptBy.cs

根据指定的键选择器函数生成两个序列的集差异。

public static System.Collections.Generic.IAsyncEnumerable<TSource> ExceptBy<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> first, System.Collections.Generic.IAsyncEnumerable<TKey> second, Func<TSource,TKey> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default);

static member ExceptBy : System.Collections.Generic.IAsyncEnumerable<'Source> * System.Collections.Generic.IAsyncEnumerable<'Key> * Func<'Source, 'Key> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Collections.Generic.IAsyncEnumerable<'Source>

<Extension()>
Public Function ExceptBy(Of TSource, TKey) (first As IAsyncEnumerable(Of TSource), second As IAsyncEnumerable(Of TKey), keySelector As Func(Of TSource, TKey), Optional comparer As IEqualityComparer(Of TKey) = Nothing) As IAsyncEnumerable(Of TSource)