ErrorWithData

Struct ErrorWithData 

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pub struct ErrorWithData<E: Error> { /* private fields */ }
Expand description

Type that allows to return data with the error

This is useful since commands like new() will take ownership of the data. Using this as error type allows to continue using the data afterward.

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impl<E: Error> ErrorWithData<E>

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pub fn new(err: E, data: Vec<u8>) -> Self

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pub fn err(&self) -> &E

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pub fn into_inner(self) -> Vec<u8>

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pub fn map_err<F: Error>(self, op: impl FnOnce(E) -> F) -> ErrorWithData<F>

Trait Implementations§

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impl<E: Error> Debug for ErrorWithData<E>

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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<E: Error> Display for ErrorWithData<E>

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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<E: Error> Error for ErrorWithData<E>

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

Auto Trait Implementations§

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impl<E> Freeze for ErrorWithData<E>
where E: Freeze,

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impl<E> RefUnwindSafe for ErrorWithData<E>
where E: RefUnwindSafe,

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impl<E> Send for ErrorWithData<E>
where E: Send,

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impl<E> Sync for ErrorWithData<E>
where E: Sync,

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impl<E> Unpin for ErrorWithData<E>
where E: Unpin,

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impl<E> UnwindSafe for ErrorWithData<E>
where E: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.