Enum AsyncError 

pub enum AsyncError {
    Error(String),
    None,
    Cancelled,
    Timeout,
}

Represents errors that can occur during asynchronous operations.

This enum provides a standardized way to represent different types of errors that might occur during asynchronous operations, such as general errors, None values, cancellations, and timeouts.

Variants

Error(String)

A general error with a message describing what went wrong.

None

An operation returned None when a value was expected.

Cancelled

The operation was cancelled before completion.

Timeout

The operation timed out.

Implementations

impl AsyncError

pub fn error(msg: impl Into<String>) -> Self

pub fn is_none(&self) -> bool

Returns true if this error represents a None result.

pub fn is_error(&self) -> bool

Returns true if this error is a general error with a message.

pub fn is_cancelled(&self) -> bool

Returns true if this error represents a cancelled operation.

pub fn is_timeout(&self) -> bool

Returns true if this error represents a timeout.

Trait Implementations

impl Clone for AsyncError

fn clone(&self) -> AsyncError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AsyncError

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

Formats the value using the given formatter.

impl Display for AsyncError

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

Formats the value using the given formatter.

impl Error for AsyncError

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.

impl Hash for AsyncError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AsyncError

fn eq(&self, other: &AsyncError) -> 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 Eq for AsyncError

impl StructuralPartialEq for AsyncError