Trait Error

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

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§

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

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

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impl Display for Box<dyn Error>

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

Formats the value using the given formatter. Read more
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impl Error for Box<dyn Error>

1.30.0 · Source§

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

Returns the lower-level source of this error, if any. Read more
1.0.0 · Source§

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
1.0.0 · Source§

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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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. Read more
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impl<'a, E: Error + 'a> From<E> for Box<dyn Error + 'a>

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fn from(e: E) -> Self

Converts to this type from the input type.

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