case class MyCase(id: Int, str: String)

object Fail extends App {

  private def theFunction(): Option[MyCase] = {
    implicit val intParser: String => Int = _.toInt

    for {
      id <- parse[Int]("43")
      str <- parse[String]("string")
    } yield {
      MyCase(id, str)
    }
  }

  private def parse[T](field: String)(implicit parser: String => T): Option[T] = {
    try {
      Some(parser(field.trim))
    } catch {
      case _:Throwable => None
    }
  }

  println(theFunction())

}