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scala> val inc = funcd _
inc: Int => Int = $$Lambda$1043/1332208607@56681eaf

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scala> val inc = funcd
<console>:12: error: missing argument list for method funcd
Unapplied methods are only converted to functions when a function type is expected.
You can make this conversion explicit by writing `funcd _` or `funcd(_)` instead of `funcd`.
       val inc = funcd
                 ^

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scala> List(1, 2, 3, 4, 5).map(func)
res0: List[Int] = List(2, 3, 4, 5, 6)

scala> List(1, 2, 3, 4, 5).map(funcd)
res1: List[Int] = List(2, 3, 4, 5, 6)

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scala> val func = (a: Int) => a + 1
func: Int => Int = $$Lambda$1030/1250816994@3d98d138

scala> def funcd(a: Int) = a + 1
funcd: (a: Int)Int

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val func = (a: Int) => a + 1
def funcd(a: Int) = a + 1

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All exercises are attempted on https://coderpad.io

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harmeet@harmeet-Vostro-3558:~/akka-samples/akka-cinammon$ sbt run
[info] Loading global plugins from /home/harmeet/.sbt/0.13/plugins
[info] Loading project definition from /home/harmeet/akka-samples/akka-cinammon/project
[info] Set current project to akka-cinammon (in build file:/home/harmeet/akka-samples/akka-cinammon/)
[warn] Multiple main classes detected.  Run 'show discoveredMainClasses' to see the list

Multiple main classes detected, select one to run:

 [1] com.harmeetsingh13.actors.HelloWorldActor
 [2] com.harmeetsingh13.actors.HelloWorldPoolActor

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package com.harmeetsingh13.actors

import akka.actor.{Actor, ActorLogging, ActorSystem, Props}

/**
  * Created by Harmeet Singh(Taara) on 1/7/17.
  */
class HelloWorldActor extends Actor with ActorLogging {

  override def receive: Receive = {

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cinnamon.akka {
  actors {
    "/user/*" {
      report-by = instance
    }
  }
}
cinnamon.chmetrics {
  reporters += "console-reporter"
}

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val akkaVersion = "2.4.17"

lazy val `akka-cinammon` = project in file(".") enablePlugins (Cinnamon)

// Add the Cinnamon Agent for run and test
cinnamon in run := true
cinnamon in test := true

// Set the Cinnamon Agent log level
cinnamonLogLevel := "INFO"