Enum WatchError 

pub enum WatchError {
    LimitExceeded(usize),
    InvalidPrefix,
}

Watch event types and handles — available when the watch feature is enabled.

Use these when implementing embedded watch handlers:

use d_engine::{WatchEventType, WatcherHandle, WatchEvent};

Errors returned by WatchRegistry registration methods.

Variants

LimitExceeded(usize)

Active watcher count has reached the configured max_watcher_count cap.

InvalidPrefix

Prefix must start with ‘/’ and end with ‘/’.

Trait Implementations

impl Debug for WatchError

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

Formats the value using the given formatter.

impl Display for WatchError

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

Formats the value using the given formatter.

impl Error for WatchError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.