Documentation

This function returns the name of its caller function, but it requires that the caller function has HasCallStack constraint. Otherwise, it returns "unknown".

>>> foo :: HasCallStack => String; foo = ownName
>>> foo
"foo"
>>> bar :: HasCallStack => String; bar = foo
>>> bar
"foo"

This function returns the name of its caller of the caller function, but it requires that the caller function and caller of the caller function have HasCallStack constraint. Otherwise, it returns "unkown". It's useful for logging:

>>> log :: HasCallStack => String -> IO (); log s = putStrLn $ callerName ++ ":" ++ s
>>> greeting :: HasCallStack => IO (); greeting = log "Starting..." >> putStrLn "Hello!" >> log "Ending..."
>>> greeting
greeting:Starting...
Hello!
greeting:Ending...