BeforeAfter.scala

// original (ew)
class Person(val name: String, val department: String)
var people = Array(new Person(“Jones”, “Marketing”), new Person(“Smith”, “Engineering”))
var engineer: Person = null
var index = 0
while (index < people.length) {
if (people(index).department == “Engineering”) engineer = people(index) index = index + 1
}
println(engineer.name + “ is an engineer”)

// revised
case class Person(name: String, department: String)
val people = Array(Person("Jones", "Marketing"), Person("Smith", "Engineering")) // why not make it a set

// maybe something like this:
people.filter(_.department == "Engineering").foreach{ p => println(s"${p.name} is an engineer")}
// or maybe like this: 
people.foreach{ case Person(name, dept) => if (dept == "Engineering") println(s"$name is an engineer")} // i like this better