Struct Cause 

pub struct Cause<T> { /* private fields */ }

A tiny generic implementation of the std::error::Error trait.

Implementations

impl<T> Cause<T>

pub fn new(cause: T) -> Self

Create a Cause instance with its cause.

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

Set the message for this error.

pub fn src(self, src: impl Error + Send + 'static) -> Self

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

pub fn cause(&self) -> &T

Get a reference to the cause

pub fn message(&self) -> Option<&String>

Get a reference to the message

Trait Implementations

impl<T: Debug> Debug for Cause<T>

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

Formats the value using the given formatter.

impl<T: Debug> Deref for Cause<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<T: Debug> Display for Cause<T>

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

Formats the value using the given formatter.

impl<T: Debug> Error for Cause<T>

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.