Trait Error

pub trait Error: Debug {
    // Provided method
    fn source(&self) -> Option<&(dyn Error + 'static)> { ... }
}

Generic Error type. Similar to std::error::Error but supports no_std. If the std feature is enabled, Error will implement std::error::Error. Automatically implements fmt::Display by using the Debug implementation ("{:?}").

Provided Methods

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

The lower-level source of this error, if any.

Trait Implementations

impl Display for Box<dyn Error>

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

Formats the value using the given formatter.

impl Error for Box<dyn Error>

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<'a, E: Error + 'a> From<E> for Box<dyn Error + 'a>

fn from(e: E) -> Self

Converts to this type from the input type.

Implementors

impl Error for PackError

impl Error for Error

impl Error for StreamError

impl Error for ObserverError

impl Error for IOError

impl<E: Error> Error for StdError<E>