Trait Property 

pub trait Property:
    Clone
    + Send
    + Sync
    + PartialEq
    + 'static {
    const KEY: &'static str;
}

Marker trait for properties that can be stored and watched

Properties must be:

• Clone: For copying values to watchers
• Send + Sync: For thread-safe access
• PartialEq: For change detection (only emit when value actually changes)
• ’static: For type-erased storage using TypeId

The KEY constant provides a human-readable identifier for debugging, logging, and event filtering.

Required Associated Constants

const KEY: &'static str

Unique key identifying this property type

Used for debugging, logging, and filtering change events. Should be unique within your application domain.

Examples

• "volume" for audio volume
• "temperature" for sensor readings
• "connection_state" for network status

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Property for Bass

const KEY: &'static str = "bass"

impl Property for CurrentTrack

const KEY: &'static str = "current_track"

impl Property for GroupMembership

const KEY: &'static str = "group_membership"

impl Property for GroupMute

const KEY: &'static str = "group_mute"

impl Property for GroupVolume

const KEY: &'static str = "group_volume"

impl Property for GroupVolumeChangeable

const KEY: &'static str = "group_volume_changeable"

impl Property for Loudness

const KEY: &'static str = "loudness"

impl Property for Mute

const KEY: &'static str = "mute"

impl Property for PlaybackState

const KEY: &'static str = "playback_state"

impl Property for Position

const KEY: &'static str = "position"

impl Property for Topology

const KEY: &'static str = "topology"

impl Property for Treble

const KEY: &'static str = "treble"

impl Property for Volume

const KEY: &'static str = "volume"