The threshold affects the visibility of a given logger.
When a log statement is called, e.g.
flog.debug('foo'), futile.logger compares the
threshold of the logger with the level implied in the log
command (in this case DEBUG). If the log level is at or
higher in priority than the logger threshold, a message
will print. Otherwise the command will silently return.
Arguments
threshold
integer The new threshold for the given
logger
name
character The name of the logger
Usage
# Get the threshold for the given logger
flog.threshold(name) %::% character : character
flog.threshold(name=ROOT)
# Set the threshold for the given logger
flog.threshold(threshold, name=ROOT)