Enum Priority 

#[non_exhaustive]
pub enum Priority {
    Lowest = 0,
    Low = 25,
    Normal = 50,
    High = 75,
    Highest = 100,
    Critical = 125,
}

Priority levels for event listeners

Listeners with higher priority are executed first. This allows for controlling the execution order of event handlers.

Example

use mod_events::{EventDispatcher, Priority, Event};

#[derive(Debug, Clone)]
struct MyEvent {
    message: String,
}

impl Event for MyEvent {
    fn as_any(&self) -> &dyn std::any::Any {
        self
    }
}

let dispatcher = EventDispatcher::new();

// This will execute first
dispatcher.subscribe_with_priority(|event: &MyEvent| {
    println!("High priority handler");
    Ok(())
}, Priority::High);

// This will execute second
dispatcher.subscribe_with_priority(|event: &MyEvent| {
    println!("Normal priority handler");
    Ok(())
}, Priority::Normal);

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Lowest = 0

Lowest priority (0)

Low = 25

Low priority (25)

Normal = 50

Normal priority (50) - default

High = 75

High priority (75)

Highest = 100

Highest priority (100)

Critical = 125

Critical priority (125) - use sparingly

Implementations

impl Priority

pub fn all() -> &'static [Priority]

Get all priority levels in order

Trait Implementations

impl Clone for Priority

fn clone(&self) -> Priority

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Priority

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Priority

fn default() -> Priority

Returns the “default value” for a type.

impl Ord for Priority

fn cmp(&self, other: &Priority) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Priority

fn eq(&self, other: &Priority) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Priority

fn partial_cmp(&self, other: &Priority) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Priority

impl Eq for Priority

impl StructuralPartialEq for Priority