Logging in Scala

Question

What is a good way to do logging in a Scala application? Something that is consistent with the language philosophy, does not clutter the code, and is low-maintenance and uno

Answer 1

I use SLF4J + Logback classic and apply it like this:

trait Logging {
  lazy val logger = LoggerFactory.getLogger(getClass)

  implicit def logging2Logger(anything: Logging): Logger = anything.logger
}

Then you can use it whichever fits your style better:

class X with Logging {
    logger.debug("foo")
    debug("bar")
}

but this approach of course uses a logger instance per class instance.