maxkorolev

      case class Fun[A, B](run: A => B) {
        def map[C](f: B => C): Fun[A, C] = Fun(a => f(run(a)))
        def flatMap[C](f: B => Fun[A, C]): Fun[A, C] =
          Fun(a => f(run(a)).run(a))
      }
      case class Config(db: String, logColor: String)

      object Repo {
        def get(id: Int): Fun[Config, Int] = Fun(conf => id)
      }

maxkorolev

// simple programm to show how to use ZIO and to show which opportunities it can bring
import zio._

// trait to describe Config
trait HasConfig {
  def dbConfig: DBConfig
  def loggerConfig: LoggerConfig
}
case class DBConfig(db: String)
case class LoggerConfig(logColor: String)