Example usage of Cats FlatMap

CatsFlatmap,scala

import cats._
import cats.implicits._

// Example usage of Cats Flatmap

object CatsFlatmap extends App {

  val listFlatMap=FlatMap[List]

  val li=List(1,2,3)

  println(listFlatMap.flatten(List(li)))

  println(listFlatMap.flatMap(li)(i=>List(i+100)))
  println(listFlatMap.mproduct(li)(i=>List(i+100)))

  val boolList=listFlatMap.flatMap(li)(i=>List(i>2))
  println(boolList)

  val strings=listFlatMap.ifM(boolList)(List("true!","really"), List("false!"))
  println(strings)

  val li2=List(10,15,20)

  println(listFlatMap.map2(li,li2)(_+_))

}

output.txt

List(1, 2, 3)
List(101, 102, 103)
List((1,101), (2,102), (3,103))
List(false, false, true)
List(false!, false!, true!, really)
List(11, 16, 21, 12, 17, 22, 13, 18, 23)