# [−] [src] Macro log::warn

    macro_rules! warn {
        (target: $target:expr, $($arg:tt)+) => { ... };
        ($($arg:tt)+) => { ... };
    }

Logs a message at the warn level.

# Examples

ⓘThis code runs with edition 2018

    use log::warn;

    let warn_description = "Invalid Input";

    warn!("Warning! {}!", warn_description);
    warn!(target: "input_events", "App received warning: {}", warn_description);