object Controls {

   type CloseableResource = { def close() }

   /**
    * Equivalent of C# using keyword. Automatically closes any resource which has a close method.
    * Capable of returning a value
    * @param T resource which has a close() method
    * @param M result
    */
   def using[ T <: CloseableResource, M ](resource: T)(block: T => M ): M = {
      require( resource != null, "non-null resource is required" )
      try {
	      block(resource)
      } finally {
	      closeResource(resource)
      }
   }


   /**
    * Multiple resource version
    */
   def using[T <: CloseableResource, M](resources: T*)(block: Seq[T] => M): M = {
      try {
         block(resources)
      } finally {
         resources.foreach(closeResource)
      }
   }

   /**
    * Mutes closing exceptions
    */
   private[this] def closeResource[ T <: CloseableResource ] ( resource: T ): Unit = {
	  try {
	      resource.close
	  }	catch {
	      case e => e.printStackTrace
	  }
   }

}