rrodseth

// Credit: http://blog.knoldus.com/2013/01/27/akka-futures-using-for-comprehensions/

import akka.actor.ActorSystem

import scala.concurrent.{future,  Future, Await }
import scala.concurrent.ExecutionContext.Implicits.global

object FutureComposingWithFor extends App {

    def longRunningFunction(number: Int) = {

rrodseth

  // Inspired by a tweet from @trautonen 1/13/2016
  // Use Source.unfoldAsync to turn paginated database results into an akka-streams Source
  // unfold is the inverse of fold

  case class Page[T](pageNumber:Long, totalPages:Long, contents:List[T])
  case class Thing(id: Long, name: String = "foo")
  
  val totalPages = 5 // 
  val pageSize = 3

rrodseth

 -- Function which takes the name of a month ("May") and the number of days in that month (31), 
 -- and returns a list of all the dates in that month (["May 1", ..., "May 31"]).

-- using map
datesInMonth :: String -> Int -> [String]
datesInMonth month days = map (\x -> month ++ " " ++ show x) [1..days]

-- using list comprehension
datesInMonth2 :: String -> Int -> [String]
datesInMonth2 month days = [ month ++ " " ++ show i | i <- [1..days]]