Struct zerovec::ule::OptionULE

#[repr(C, packed(1))]
pub struct OptionULE<U>(bool, MaybeUninit<U>);

This type is the ULE type for Option<U> where U is a ULE type

Example

use zerovec::ZeroVec;

let z = ZeroVec::alloc_from_slice(&[
    Some('a'),
    Some('á'),
    Some('ø'),
    None,
    Some('ł'),
]);

assert_eq!(z.get(2), Some(Some('ø')));
assert_eq!(z.get(3), Some(None));

Tuple Fields

0: bool

1: MaybeUninit<U>

Implementations

impl<U: Copy> OptionULE<U>

pub fn get(self) -> Option<U>

Obtain this as an Option<T>

pub fn new(opt: Option<U>) -> Self

Construct an OptionULE<U> from an equivalent Option<T>

Trait Implementations

impl<U: Copy> Clone for OptionULE<U>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<U: Copy + Debug> Debug for OptionULE<U>

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

Formats the value using the given formatter.

impl<U: Copy + PartialEq> PartialEq for OptionULE<U>

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

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

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

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

impl<U: ULE> ULE for OptionULE<U>

zeroed or valid-T byte sequences to fill it)

fn validate_byte_slice(bytes: &[u8]) -> Result<(), ZeroVecError>

Validates a byte slice, &[u8].

fn parse_byte_slice(bytes: &[u8]) -> Result<&[Self], ZeroVecError>

Parses a byte slice, &[u8], and return it as &[Self] with the same lifetime.

unsafe fn from_byte_slice_unchecked(bytes: &[u8]) -> &[Self]

Takes a byte slice, &[u8], and return it as &[Self] with the same lifetime, assuming that this byte slice has previously been run through Self::parse_byte_slice() with success.

fn as_byte_slice(slice: &[Self]) -> &[u8]

Given &[Self], returns a &[u8] with the same lifetime.

impl<U: Copy> Copy for OptionULE<U>

impl<U: Copy + Eq> Eq for OptionULE<U>