traditional config file code structure

Application.scala

object Application{
  def main(args: Array[String]): Unit = {
    val config = Config.get( args(0) )
    val db = connectToDb( config.dbHost, config.dbPort )
    ...
  }
}
object Config{
  def get(config: String) = {
    val reader = config_library.ConfigReader( config + “.conf” )
    Config(
      reader.readString(“db.host”),
      reader.readInt(“db.port”)
    )
  }
}
case class Config(
  dbHost: String,
  port: Int
)

production.conf

db.host = db.production-server.com
db.port = 12345

test.conf

db.host = db.test-server.com
db.port = 10000