Struct reffers::rmba::RMBA

pub struct RMBA<'a, T: 'a + ?Sized>(_, _);

RMBA can store an &T, a &mut T, a Box or an Arc. It will panic if you try to store a struct that’s not 32 bit aligned.

Note: Drop flags were removed in 1.13-nightly. If you run an earlier version, size might be larger than a single pointer due to the drop flag.

Example

use reffers::RMBA;
use std::{iter, sync};

// Uses Box if only one clone is needed, otherwise uses Arc.
fn make_a_few<'a, T>(t: T, count: usize) -> Vec<RMBA<'a, T>> {
    match count {
        0 => vec![],
        1 => vec![RMBA::new_box(t)],
        _ => iter::repeat(sync::Arc::new(t))
            .take(count).map(|a| RMBA::from(a)).collect()
    }
}

Implementations

impl<'a, T: 'a> RMBA<'a, T>

pub fn new_box(t: T) -> RMBA<'a, T>

impl<'a, T: 'a + ?Sized> RMBA<'a, T>

pub fn new<A: Into<RMBA<'a, T>>>(t: A) -> RMBA<'a, T>

pub fn try_clone(&self) -> Option<RMBA<'a, T>>

Will return a clone if it contains a Arc or &T, or None if it is a Box or &mut T

pub fn get_mut(&mut self) -> Option<&mut T>

Will return a &mut to inner contents if it contains a &mut T, a Box or if the Arc is unique. Otherwise returns None.

Trait Implementations

impl<'a, T: 'a + ?Sized> AsRef<T> for RMBA<'a, T>

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<'a, T: 'a + ?Sized> Borrow<T> for RMBA<'a, T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<'a, T: 'a + ?Sized> Debug for RMBA<'a, T>

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

Formats the value using the given formatter.

impl<'a, T: 'a + ?Sized> Deref for RMBA<'a, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, T: 'a + ?Sized> Drop for RMBA<'a, T>

fn drop(&mut self)

Executes the destructor for this type.

impl<'a, T: 'a + ?Sized> From<&'a T> for RMBA<'a, T>

fn from(t: &'a T) -> RMBA<'a, T>

Converts to this type from the input type.

impl<'a, T: 'a + ?Sized> From<&'a mut T> for RMBA<'a, T>

fn from(t: &'a mut T) -> RMBA<'a, T>

Converts to this type from the input type.

impl<'a, T: 'a + ?Sized> From<Arc<T>> for RMBA<'a, T>

fn from(t: Arc<T>) -> RMBA<'a, T>

Converts to this type from the input type.

impl<'a, T: 'a + ?Sized> From<Box<T, Global>> for RMBA<'a, T>

fn from(t: Box<T>) -> RMBA<'a, T>

Converts to this type from the input type.

impl<'a, T: 'a + ?Sized + Hash> Hash for RMBA<'a, T>

fn hash<H>(&self, state: &mut H)where
    H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a, T: ?Sized + Ord> Ord for RMBA<'a, T>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<'a, T: 'a + ?Sized + PartialEq> PartialEq<RMBA<'a, T>> for RMBA<'a, T>

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: &Self) -> bool

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

impl<'a, T: 'a + ?Sized + PartialOrd> PartialOrd<RMBA<'a, T>> for RMBA<'a, T>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

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

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

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

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

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

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

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

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

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

impl<'a, T: ?Sized> AReffic for RMBA<'a, T>

impl<'a, T: 'a + ?Sized + Eq> Eq for RMBA<'a, T>

impl<'a, T: 'a + ?Sized + Send> Send for RMBA<'a, T>

impl<'a, T: 'a + ?Sized> StableDeref for RMBA<'a, T>