BatLog.Easy
A simple-to-use logger with verbosity levels that outputs by default to stderr (changeable at runtime) with the date and time at the beginning of each log message.
Set this ref to the lowest level of log you want logged. For example, Easy.level := `always
disables all logging except that at the `always
level. Setting Easy.level := `info
will enable logging for `info
, `warn
, `error
, `fatal
and `always
levels.
val output : unit BatIO.output ref
Set this ref to the output you want logging messages to go to. Defaults to stderr
.
val log : ?fp:string -> easy_lev -> string -> unit
log lev msg
logs the message msg
if the current logging level is lev
or lower.
val logf : ?fp:string -> easy_lev -> ('a, unit BatIO.output, unit) format -> 'a
As log
, but instead of a string message, a printf format is allowed with whatever arguments are appropriate.