Try with resources in scala

gistfile1.txt

import scala.util.{Failure, Success, Try}

class Loan[A <: AutoCloseable](resource: A) {
  def to[B](block: A => B): B = {
    Try(block(resource)) match {
      case Success(result) =>
        resource.close()
        result
      case Failure(e) =>
        resource.close()
        throw e
    }
  }
}

object Loan {
  def loan[A <: AutoCloseable](resource: A): Loan[A] = new Loan(resource)
}