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Akka.NETSourceOperationsPrependTOut1, TOut2, TMat Method
Prepend the given SourceTOut, TMat to this IFlowTOut, TMat, meaning that before elements are generated from this IFlowTOut, TMat, the Source's elements will be produced until it is exhausted, at which point Flow elements will start being produced. Note that this IFlowTOut, TMat will be materialized together with the SourceTOut, TMat and just kept from producing elements by asserting back-pressure until its time comes. If the given SourceTOut, TMat gets upstream error - no elements from this IFlowTOut, TMat will be pulled. Emits when element is available from the given SourceTOut, TMat or from current stream when the SourceTOut, TMat is completed Backpressures when downstream backpressures Completes when this IFlowTOut, TMat completes Cancels when downstream cancels

Namespace:  Akka.Streams.Dsl
Assembly:  Akka.Streams (in Akka.Streams.dll) Version: 1.2.3.42 (1.2.3.42)
Syntax
public static Source<TOut2, TMat> Prepend<TOut1, TOut2, TMat>(
	this Source<TOut1, TMat> flow,
	IGraph<SourceShape<TOut2>, TMat> that
)
where TOut1 : TOut2

Parameters

flow
Type: Akka.Streams.DslSourceTOut1, TMat
TBD
that
Type: Akka.StreamsIGraphSourceShapeTOut2, TMat
TBD

Type Parameters

TOut1
TBD
TOut2
TBD
TMat
TBD

Return Value

Type: SourceTOut2, TMat
TBD

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type SourceTOut1, TMat. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also