Enum FromSliceError 

#[non_exhaustive]
pub enum FromSliceError {
    #[non_exhaustive]
    InvalidLength {
        expected: usize,
        got: usize,
    },
}

Error returned when a byte slice cannot be converted to Fixed<[u8; N]> due to length mismatch. Produced by Fixed::try_from(&[u8]). Error returned when a byte slice cannot be converted to a fixed-size array.

Carries the expected and actual lengths in all build profiles. Lengths are public protocol parameters, not secret material.

The std::error::Error impl requires the std feature. Without it the type still exists and still implements Display, but it is not an Error, so ? into Box<dyn Error> and std::io::Error::other will not compile. This is an MSRV consequence, not a policy: core::error::Error needs Rust 1.81 and this line targets 1.70. On 0.9.x the impl is unconditional and available in no_std.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

#[non_exhaustive]

InvalidLength

The slice length does not match the target array length.

Fields

Non-exhaustive enum variants could have additional fields added in future. Therefore, non-exhaustive enum variants cannot be constructed in external crates and cannot be matched against.

expected: usize

Number of bytes the target array requires.

got: usize

Number of bytes actually provided.

Trait Implementations

impl Clone for FromSliceError

fn clone(&self) -> FromSliceError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FromSliceError

impl Debug for FromSliceError

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

Formats the value using the given formatter.

impl Display for FromSliceError

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

Formats the value using the given formatter.

impl Eq for FromSliceError

impl Error for FromSliceError

Available on crate feature std only.

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 PartialEq for FromSliceError

fn eq(&self, other: &FromSliceError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FromSliceError