Struct Error

pub struct Error(/* private fields */);

A small and no_std compatible error type

The Error::raw_os_error() will indicate if the error is from the OS, and if so, which error code the OS gave the application. If such an error is encountered, please consult with your system documentation.

If this crate’s "std" Cargo feature is enabled, then:

• getrandom::Error implements std::error::Error
• std::io::Error implements From<getrandom::Error>.

Implementations

impl Error

pub const UNSUPPORTED: Error

This target/platform is not supported by getrandom.

pub const ERRNO_NOT_POSITIVE: Error

The platform-specific errno returned a non-positive value.

pub const UNEXPECTED: Error

Encountered an unexpected situation which should not happen in practice.

pub fn raw_os_error(self) -> Option<i32>

Extract the raw OS error code (if this error came from the OS)

This method is identical to std::io::Error::raw_os_error(), except that it works in no_std contexts. On most targets this method returns Option<i32>, but some platforms (e.g. UEFI) may use a different primitive type like usize. Consult with the RawOsError docs for more information.

If this method returns None, the error value can still be formatted via the Display implementation.

pub const fn new_custom(n: u16) -> Error

Creates a new instance of an Error from a particular custom error code.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl PartialEq for Error

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Error

impl Eq for Error

impl StructuralPartialEq for Error

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 4 bytes