Yes David,

This avoids calling the toString() method on the objects until the log message is actually required to be logged.

If the toString() methods is an expensive method, time-wise, this time is avoided when the log message is not needed.

Look at http://logback.qos.ch/manual/architecture.html if you have not already. Go to a section called ‘Better alternative’ near the bottom of the page.

Brett

From: logback-user-bounces@qos.ch [mailto:logback-user-bounces@qos.ch] On Behalf Of David Harkness
Sent: Friday, 8 February 2013 10:29 AM
To: logback users list
Subject: Re: [logback-user] commons-logging -> sl4j -> logback

On Thu, Feb 7, 2013 at 1:11 PM, Brett Walker <brett.walker@geometryit.com> wrote:

Log.debug("The object is {0}", object);

Are positional parameters a new feature in Logback? I just started using it and all the examples I've see use empty braces with no way to reorder the parameters via the message. In other words, I would expect to see this:

Log.debug("The object is {}", object);

David