Trait OptionalDescription 

pub trait OptionalDescription {
    // Required method
    fn description(&self) -> Option<&'static str>;
}

Like [Display], but ['static], no_std and no_alloc.

See also Description

Example

#[derive(OptionalDescription)]
enum BatteryStatus {
    Okay,

    #[description("Low battery!")]
    LowBattery,

    #[description("Fully charged! Please remove the charger.")]
    FullyCharged,
}

fn main() {
    let battery1 = BatteryStatus::LowBattery;

    let battery2 = BatteryStatus::Okay;

    if let Some(description) = battery1.description() {
        println!("Battery notification: {}", description);
    }

    if let Some(description) = battery2.description() {
        println!("Battery notification: {}", description);
    }

    // Battery notification: Low battery!
    //
}

Required Methods

fn description(&self) -> Option<&'static str>

Implementors