BatchedJoinBlock<T1,T2,T3>.TryReceive 方法

定义

命名空间:

System.Threading.Tasks.Dataflow

程序集:

System.Threading.Tasks.Dataflow.dll

从 IReceivableSourceBlock<TOutput> 中尝试同步接收可用输出项。

public:
 virtual bool TryReceive(Predicate<Tuple<System::Collections::Generic::IList<T1> ^, System::Collections::Generic::IList<T2> ^, System::Collections::Generic::IList<T3> ^> ^> ^ filter, [Runtime::InteropServices::Out] Tuple<System::Collections::Generic::IList<T1> ^, System::Collections::Generic::IList<T2> ^, System::Collections::Generic::IList<T3> ^> ^ % item);

public bool TryReceive (Predicate<Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>> filter, out Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>> item);

public bool TryReceive (Predicate<Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>>? filter, out Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>? item);

abstract member TryReceive : Predicate<System.Collections.Generic.IList<'T1> * System.Collections.Generic.IList<'T2> * System.Collections.Generic.IList<'T3>> * Tuple -> bool
override this.TryReceive : Predicate<System.Collections.Generic.IList<'T1> * System.Collections.Generic.IList<'T2> * System.Collections.Generic.IList<'T3>> * Tuple -> bool

Public Function TryReceive (filter As Predicate(Of Tuple(Of IList(Of T1), IList(Of T2), IList(Of T3))), ByRef item As Tuple(Of IList(Of T1), IList(Of T2), IList(Of T3))) As Boolean

参数

filter

Predicate<Tuple<IList<T1>,IList<T2>,IList<T3>>>

为使值得到检索，必须成功传递值的谓词。 filter 可能是 null ，在此情况下，所有项目均通过。

item

Tuple<IList<T1>,IList<T2>,IList<T3>>

从源中检索到的项。

返回

Boolean

如果可以接收项，则为 true，否则为 false。

注解

此方法不会阻止等待源提供项。

在检查某个元素后，它将返回该元素是否可用。