SingleConcat

java.lang.Object
- akka.stream.stage.GraphStageWithMaterializedValue<S,NotUsed>
- - akka.stream.stage.GraphStage<FlowShape<E,E>>
  - - akka.stream.impl.SingleConcat<E>

All Implemented Interfaces:

Graph<FlowShape<E,E>,NotUsed>
```
public final class SingleConcat<E>
extends GraphStage<FlowShape<E,E>>
```
Concatenating a single element to a stream is common enough that it warrants this optimization which avoids the actual fan-out for such cases.
INTERNAL API

Nested Class Summary
- Nested classes/interfaces inherited from interface akka.stream.Graph
  Graph.GraphMapMatVal<S extends Shape,M>

Constructor Summary

Constructors
Constructor Description

SingleConcat(E singleElem)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`GraphStageLogic`	`createLogic(Attributes inheritedAttributes)`
`Inlet<E>`	`in()`
`Outlet<E>`	`out()`
`FlowShape<E,E>`	`shape()`	The shape of a graph is all that is externally visible: its inlets and outlets.
`java.lang.String`	`toString()`

Methods inherited from class akka.stream.stage.GraphStage
createLogicAndMaterializedValue

Methods inherited from class akka.stream.stage.GraphStageWithMaterializedValue
createLogicAndMaterializedValue, initialAttributes, traversalBuilder, withAttributes

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface akka.stream.Graph
addAttributes, async, async, async, named

- Constructor Detail
  - SingleConcat
```
public SingleConcat(E singleElem)
```
- Method Detail
  - createLogic
```
public GraphStageLogic createLogic(Attributes inheritedAttributes)
```
    Specified by:
    
    createLogic in class GraphStage<FlowShape<E,E>>
  - in
```
public Inlet<E> in()
```
  - out
```
public Outlet<E> out()
```
  - shape
```
public FlowShape<E,E> shape()
```
    Description copied from interface: Graph
    
    The shape of a graph is all that is externally visible: its inlets and outlets.
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object