Inline vs Chaining Example

gistfile1.scala

object Chaining {
  val xs = List(1,2,3,4,5)                        //> xs  : List[Int] = List(1, 2, 3, 4, 5)
  def square(x:Int):Int = x*x                     //> square: (x: Int)Int
  def even(x:Int):Boolean = x%2 == 0              //> even: (x: Int)Boolean
  
  //// SHORT EXAMPLE
  xs map square // <-- Prefer                     //> res0: List[Int] = List(1, 4, 9, 16, 25)
  // vs
  xs.map(square)                                  //> res1: List[Int] = List(1, 4, 9, 16, 25)
  
  //// LONG EXAMPLE
  xs filter even map square reduce (_+_)          //> res2: Int = 20
  // vs
  xs.filter(even) // <-- Prefer
    .map(square)
    .reduce(_+_)                                  //> res3: Int = 20
}