notify_once: Print a warning message if not printed earlier
Description
To avoid flooding the user with identical warning messages, this function
keeps track of which have already been shown.
Usage
notify_once(id, ..., fun = log_message)reset_notification(id, if_top_level = TRUE)
Arguments
id
Warning message id. This is used internally to refer to the
message.
fun
Function to display the notification with. Typical choices are
message or warning.
if_top_level
If TRUE the notifications will only be reset if
reset_notification was called from a top-level function call.
This behaviour prevents the notifications from being reset multiple times
during nested calls to functions such as fit and
evaluate.