Struct neon::handle::DowncastError

pub struct DowncastError<F: Value, T: Value> { /* fields omitted */ }

An error representing a failed downcast.

Trait Implementations

impl<F: Clone + Value, T: Clone + Value> Clone for DowncastError<F, T>

fn clone(&self) -> DowncastError<F, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<F: Value, T: Value> Debug for DowncastError<F, T>

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

Formats the value using the given formatter.

impl<F: Value, T: Value> Display for DowncastError<F, T>

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

Formats the value using the given formatter.

impl<F: Eq + Value, T: Eq + Value> Eq for DowncastError<F, T>

impl<F: Value, T: Value> Error for DowncastError<F, T>

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

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

pub fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl<F: Ord + Value, T: Ord + Value> Ord for DowncastError<F, T>

fn cmp(&self, other: &DowncastError<F, T>) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<F: PartialEq + Value, T: PartialEq + Value> PartialEq<DowncastError<F, T>> for DowncastError<F, T>

fn eq(&self, other: &DowncastError<F, T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &DowncastError<F, T>) -> bool

This method tests for !=.

impl<F: PartialOrd + Value, T: PartialOrd + Value> PartialOrd<DowncastError<F, T>> for DowncastError<F, T>

fn partial_cmp(&self, other: &DowncastError<F, T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &DowncastError<F, T>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &DowncastError<F, T>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &DowncastError<F, T>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &DowncastError<F, T>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<F: Value, T: Value> StructuralEq for DowncastError<F, T>

impl<F: Value, T: Value> StructuralPartialEq for DowncastError<F, T>