warning!() { /* proc-macro */ }Expand description
Log a WARNING message.
WARNING is a message level indicating a potential problem.
In general WARNING messages should describe events that will be of interest to end users or system managers, or which indicate potential problems.
If the logger is currently enabled for the WARNING message level then the given message is forwarded to all the registered output Handler objects.
§Parameters
msg- See Special Note
§Examples
See config. The syntax/usage is the same.
Just substitute warning! for config!.