lumberjack_demo.kt

// simple logs
L.d { "This is my first log entry" }
L.logIf { true }?.d { "This is my second log entry - it will be logged because logIf evaluates to true" }
L.logIf { false }?.d { "Slow log line without any impact at runtime - sleeping 5s: ${ Thread.sleep(5000) }"}
L.d { "Log line 3 will not slow down this code because the function inside the log will never be called because the logIf evaluates to false" }

// optionally tag a log line - tags are useful to group logs and can be disabled at runtime
L.tag("TAG1").d { "Log with tag" }