logging is a wrapper around fast-logger which makes
it easy to log from IO. It provides the following conveniences on top of
those libraries:
-
A set of shorter functions to type:
debug,log,warn, plus others that flush after each message, or which allow providing a message source string. -
Logging variants of
error,traceandtraceShow, callederrorL,traceLandtraceShowL. These useunsafePerformIOin order to act as direct replacements, so the usual caveats apply. -
A global function,
setDebugLevel, which uses a globalIORefto record the logging level, saving you from having to carry around the notion of "verbosity level" in a Reader environment. -
A set of "timed" variants,
timedLogandtimedDebug, which report how long the specified action took to execute in wall-clock time.