Simple config example

dumbcinfig.scala

trait Config {
  val timeout: Int = 1
  val interval: Int = 2
  def wantToChangeThis: Int
}

object DefaultConfig extends Config {
  val wantToChangeThis: Int = 34
}

class Foo(conf: Config) {
  def run = {
    println(conf.timeout)
    println(conf.interval)
  }
}

// This will be the defualt to use, but external caller can still override
// configs easily
object Foo extends Foo(DefaultConfig)

Foo.run 
// 1
// 2