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Akka.NETSourceOperationsPrefixAndTailTOut, TMat Method
Takes up to n elements from the stream and returns a pair containing a strict sequence of the taken element and a stream representing the remaining elements. If n is zero or negative, then this will return a pair of an empty collection and a stream containing the whole upstream unchanged.

Emits when the configured number of prefix elements are available. Emits this prefix, and the rest as a substream

Backpressures when downstream backpressures or substream backpressures

Completes when prefix elements has been consumed and substream has been consumed

Cancels when downstream cancels or substream 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<Tuple<IImmutableList<TOut>, Source<TOut, NotUsed>>, TMat> PrefixAndTail<TOut, TMat>(
	this Source<TOut, TMat> flow,
	int n
)

Parameters

flow
Type: Akka.Streams.DslSourceTOut, TMat
TBD
n
Type: SystemInt32
TBD

Type Parameters

TOut
TBD
TMat
TBD

Return Value

Type: SourceTupleIImmutableListTOut, SourceTOut, NotUsed, TMat
TBD

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type SourceTOut, 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